You're very welcome Gifty Asare! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Kind regards :)
@@xsageonexx7399 Take, for example; x + b Square it: (x + b)(x + b), and carry out the multiplication to get the product: x^2 + 2bx + b^2 In the example polynomial, the 7/6 coefficient is your 2b, so you need to divide by 2, or multiply by 1/2 to get the value of b to add to the L-value to produce a perfect square.
I'm French. I'm retired (after a professional career in data processing). I love mathematics (it doesn't mean I'm an expert of it :-) and I APPRECIATE A LOT your videos. Thanks to them we can approach a high level of problem resolutions as this one in which the irrational number i is used to get the solution. Congratulation and thank you for sharing with us your high level knowledge.
Or, in order to keep everything in integers for as long as possible, note that the middle coefficient is odd, so multiply by 4·6 (rather than by 6): 4·6·6x² - 24·7x = -24·8 12²x² - 2·12·7x = -192 12²x² - 2·12·7x + 7² = 49 - 192 (12x - 7)² = -143 x = (7 ± i√143)/12 Fred
Dumb question maybe but half of 2nd coefficient is 84, so don’t follow how you’re getting to 7squared instead of 84squared? Trying to relearn basic math to help my kids :). Thx.
For me it is very funny how you calculate the right side of the equation. You could do it like this: -4/3 + 49/144 = -192/144 + 49/144 = -143/144. Your way to do it seems like if a mountain hiker wants to reach the height of 1000 meters, so he goes up to 5000 meters and then comes down.
6x^2-7x+8 =0, a= 6, b = -7, c = 8, -b = 7, b^2 = 49, 4ac = 4×6×8 = 192, b^2 -4ac = 48-192 = - 144 < 0 Since it is negative , this equation has no real roots.
Excellent presentation. Thank you for this. I am now clarified that in finding a certain number to complete a square, we can possibly arrived on an imaginary number (ì). Kudos! Well explained.
You're very welcome Danny! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Kind regards :)
Hello, I think you could also use: 1) D= b Square - 4ac Knowing D is your discriminant! 2) - b + square root of D = x1 3) - b - square root of D = x2 What do you think?
Thank you so much King for your nice feedback. You are perfectly alright about the discriminant D= b Square - 4ac. I'm sure you are an awesome student 👍 Please keep sharing my channel with your family and friends. Take care dear and all the best😃
This is so relaxing to the brain I feel loads just got lifted off my shoulders. I love getting a refresher on this; thanks very much for the link. It's been at least two years since I last did these equations.
@@BigWailz_official the solutions to ax^2 + bx + c = (-b +/- sqrt(b^2 - 4ac))/ 2a. This seems quite complicated, but once you use it a couple of times, you find that unless factorisation is very simple, it's the simplest method, and I always find it simpler than completing the square. It works all the time and you can also tell very simply how many real solutions there are based on whether the value in the square root is positive (2), zero (1) or negative (0).
Andy Wright that might be so, but the whole point of the video was to show that the completing the square method could be used - as his student had asked him. It does also bring in the concept of the imaginary number rather nicely and also builds on knowledge of splitting number to root them which is convenient too, for building in and reinforcing concepts covered in earlier lessons.
Dear Henry, you are absolutely correct! However, getting to know more tools and techniques would give you more power! I'm sure you are an awesome student 👍 Please keep sharing my channel with your family and friends. Take care dear and all the best😃
The quadratic formula is the result of CTS. If you become proficient at CTS then you'll not only know where the quadratic formula came from, the quadratic formula becomes completely unnecessary. CTS is faster.
Thank you so much prakasam kannadi for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Take care dear 😃
On laptop/Computer you go to the UA-cam home page or simply put it www.youtube.com, then on your left side a column would appear, this column contains the following: "Home" "Trending" "Subscriptions" "Library" "History" "Your Videos" "Purchases" "Watch Later" "Show More" Click "Watch Later". If you're using mobile, upon opening the UA-cam App there will be a row at the bottom that will contain the following: "Home" "Explore" "Subscriptions" "Inbox" "Library" Click "Library" Upon clicking "Library" You will than find "Watch Later".
You are very welcome Patel ji! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep sharing my channel with your family and friends. Take care dear and all the best😃
@ around 4:10 you put (7/12)^2 On both sides. later you said what sign to put in between x and 7/12 whole square... It wasnt necessary...you simply should have said...its taking on the form of a^2 - 2ab+b^2. And will so...reduce to (a-b) ^ 2 .That way it would have been simpler....
Completing the square for this expression would be much better than beginning with the equation, as this also derives the coordinates for the vertex. If only roots are needed, then the formula is the obvious choice. Moreover, you should review adding fractions. -4/3 + 7^2/12^2 = -43/12^2. Only beauty lies in true mathematics.
Shatha Omar He’s doing that so that we can write the left side as a perfect square, that’s one of the main steps regarding how to solve by ”completing the square”.
Wonderful! Can we always take the half of coefficient number by 1\2...? And also can we also directly write the number obtained when multiplied by the coefficient number without making it smaller?
When I was first looking at completing the square quadratics a few weeks ago, I stumbled across this video and it nearly blew my mind. I’ve studied a bit since and just rewatched it and bingo! Makes glorious sense now. Thank you 😊 But if you are a beginner to completing the square, start with a simple few examples that don’t involve fractions, to build your understanding first.
In germany we have something that's called pq-Formel: when you see this equation x^2 + qx + q = 0, you can do this: X = - p/2 +/- Squarerootof [ (p/2)^2 - q]
So nice of you Bisma dear! You are awesome 👍 I'm glad you liked it! Please keep sharing premath channel with your family and friends. Take care dear and stay blessed😃
Love the You Tube name you use. Reminds me of one of my favorite Adages. "Math is a Wonderful Thing. Become good enough at it, and no one will EVER be able to fool you with demagoguery." As for this video, my 8th grade algebra teacher took us through a drill very similar to this one. I raised my hand and asked "Wouldn't it be easier to just apply the Quadratic Equation?" He replied "With an attitude like that, you'd be better off becoming an Accountant than a Mathematician." So I did LOL All best!
I knew immediately that they were imaginary because the nature of the root (or the discriminatnt I.e. b^(2)-4ac) is less than zero so it must mean it has two imaginary solutions. Great video👍👍
I’m long out of math. Like these videos to refresh my mind. What is the purpose of completing the square? Knowing the formula I would never bother with this. Is their a reason to?
May I suggest that when you combined the fractions, it would have been preferable to use the lowest common denominator, 144, rather than cross-multiplying, as this would lead to easier arithmetic with smaller numbers and avoid the need to cancel by sqrt(3) later.
Great video for learners like us. But perhaps you forgot to tell the learners when you used the formula (a - b)^2 = a^2 - 2ab + b^2 in the LHS equation : x^2 - 7/6.x+ (7/12)^2 = ( x - 7/12 )^2. Instead, you brought down the negative sign before 7/12 by drawing an arrow. This confused me a little in the first hand. Thanks.
I am a bit lost at 7:34, how did the square root of 429 become represented as square root of 3.143 and the square root of 423 become equal to the square root of 3.144?
Can you bring the answer all over 12 (because of common denominators) or does the inclusion of 'i' not make that possible? (7 + i(143)² ) / 12 and (7 - i(143)² ) / 12 .
Since they have a common denominator, would you further simplify the solution as x = (7+i[143]^1/2)/12 and (7-i[143]^1/2)/12 ? Also, thank you for taking the time to show us this method. You have a very easy method of teaching that helps me to understand the material.
Dear Larry Patterson , you are absolutely correct. You may simplify it further. As a Math professor, I'd accept both versions of answers as perfectly alright. Thanks for the feedback. I'll be uploading many more video lessons pretty soon. Kind regards
The steps would have been easier if you had just multiplied -4/3 by 48/48 (to get the 48, divide 144 by 3). Then if you are weak at fractions you could multiply both sides of the equation by 144.
Hi, thank you for your kind, helpful explanation, but I didn't understand why you divide the 2nd term (b term) by 2? Thank you, again . . . & God Bless . . .
Dear Glo Amador, you are very welcome. Thank you so much for taking the time to leave this comment. I'm sure you are an awesome student. Keep it up. Best regards :)
You are very welcome Earl! I'm sure you are very smart 👍 I'm glad you liked it! Please keep sharing premath channel with your family and friends. Take care dear and all the best😃 Have a very happy and blessed New Year!
Thanks sir This is my dad's phone .My teacher taught me this 5 five but i was not understanding .but yoday i saw ur video , u are fabulous I understood very fast
You're very welcome Umesh! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Take care dear 😃
Sure, you can! I used the completing the square method because my student requested me that method. Thanks for asking. Take care dear and all the best 😃
@@manojsurya1005 Completing the square is how the quadratic formula is derived in the first place. If all you are given in a problem, is to find the roots of the quadratic equation, you can use any method that is most convenient for you. If you are specifically told to use a particular method in the problem statement, you use that method.
You are very welcome Oordnajela Zitro ! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep sharing my channel with your family and friends.Take care dear and all the best😃
Dear Jose Geonzon, here is the solution: solve by completing the square x^2+3x+2 = 0 => x^2+3x = -2 => x^2+3x +(3/2)^2= -2 +(3/2)^2 => (x + 3/2)^2 = -2 + 9/4 => (x + 3/2)^2 = 1/4 => take the square root on both sides and solve for x => x=-1, x=-2 are our solutions :) Thus, you can write your function f(x) = x^2+3x+2 as in this form as well => f(x) = (x + 3/2)^2 - 1/4. Thanks for asking. All the best :)
My daughter is using this mathematics to solve her assignment
Thanks for your help and support.
You're very welcome Gifty Asare! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Kind regards :)
Good . But what Is the meaning of each step . Why we add the steps that we wanted , there should be some meaning right
Plz watch
m.ua-cam.com/users/Niteshsir
@@PreMath Why do you:
A. Pull the 7/6 aside and
B. Divide it by 2?
@@xsageonexx7399 Take, for example; x + b
Square it: (x + b)(x + b), and carry out the multiplication to get the product:
x^2 + 2bx + b^2
In the example polynomial, the 7/6 coefficient is your 2b, so you need to divide by 2, or multiply by 1/2 to get the value of b to add to the L-value to produce a perfect square.
I'm French. I'm retired (after a professional career in data processing). I love mathematics (it doesn't mean I'm an expert of it :-) and I APPRECIATE A LOT your videos. Thanks to them we can approach a high level of problem resolutions as this one in which the irrational number i is used to get the solution. Congratulation and thank you for sharing with us your high level knowledge.
Or, in order to keep everything in integers for as long as possible, note that the middle coefficient is odd, so multiply by 4·6 (rather than by 6):
4·6·6x² - 24·7x = -24·8
12²x² - 2·12·7x = -192
12²x² - 2·12·7x + 7² = 49 - 192
(12x - 7)² = -143
x = (7 ± i√143)/12
Fred
0
ffggddss :thanks so much sir,your explanation is so clear
Genius
Now i got the point of denoting quadratic root of negative numbers. Thank you.
Dumb question maybe but half of 2nd coefficient is 84, so don’t follow how you’re getting to 7squared instead of 84squared? Trying to relearn basic math to help my kids :). Thx.
9:16 When used as an operator, ± should be spoken as "plus or minus".
"positive or negative" is correct only when ± is used as a sign.
Yeah, contexts. Our teacher from math would note that, just like in your comment.
For me it is very funny how you calculate the right side of the equation. You could do it like this: -4/3 + 49/144 = -192/144 + 49/144 = -143/144.
Your way to do it seems like if a mountain hiker wants to reach the height of 1000 meters, so he goes up to 5000 meters and then comes down.
Same thoughts! I'm really bothered with how he added the fractions 😂
Exactly.....
6x^2-7x+8 =0,
a= 6, b = -7, c = 8,
-b = 7,
b^2 = 49,
4ac = 4×6×8 = 192,
b^2 -4ac = 48-192 = - 144 < 0
Since it is negative , this equation has no real roots.
Именно так, и квадрат числа не может быть отрицательным, какой же тупой автор видео
Good professor 🌷💐🌺🌺💐
Thanks and welcome
Excellent presentation. Thank you for this. I am now clarified that in finding a certain number to complete a square, we can possibly arrived on an imaginary number (ì). Kudos! Well explained.
You're very welcome Danny! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Kind regards :)
Hello, I think you could also use:
1) D= b Square - 4ac
Knowing D is your discriminant!
2) - b + square root of D = x1
3) - b - square root of D = x2
What do you think?
Thank you so much King for your nice feedback.
You are perfectly alright about the discriminant D= b Square - 4ac.
I'm sure you are an awesome student 👍 Please keep sharing my channel with your family and friends. Take care dear and all the best😃
you must answer the question as written
D= -
This is so relaxing to the brain I feel loads just got lifted off my shoulders. I love getting a refresher on this; thanks very much for the link. It's been at least two years since I last did these equations.
Please make a video on real life use of limits , mathematical induction,complex numbers
Solving with the equation is much simpler
A=6, b=-7, c=8
X=(7+/-sqrt(49-4×6×8))/12
=(7+/-sqrt(49-192))/12
=7+/-sqrt(-143))/12
=7/12+/-sqrt(143)i/12
Thank you. This is correct
Please can you break down the simplification process so I can understand
@@BigWailz_official the solutions to ax^2 + bx + c = (-b +/- sqrt(b^2 - 4ac))/ 2a. This seems quite complicated, but once you use it a couple of times, you find that unless factorisation is very simple, it's the simplest method, and I always find it simpler than completing the square. It works all the time and you can also tell very simply how many real solutions there are based on whether the value in the square root is positive (2), zero (1) or negative (0).
Andy Wright that might be so, but the whole point of the video was to show that the completing the square method could be used - as his student had asked him.
It does also bring in the concept of the imaginary number rather nicely and also builds on knowledge of splitting number to root them which is convenient too, for building in and reinforcing concepts covered in earlier lessons.
Anyone teaching equation should explain the rules........ Whenever someone understands the rules, everything becomes easy.
The rules?
Pure bs dreamt up by some arab this shit is out dated
You explain very well👍
Yes I can but why should I when using the quadratic formula is so much easier?
Dear Henry, you are absolutely correct! However, getting to know more tools and techniques would give you more power!
I'm sure you are an awesome student 👍 Please keep sharing my channel with your family and friends. Take care dear and all the best😃
The question asked specifically for this method - in an exam you would lose marks for ignoring that
The quadratic formula is a generalized form of completing the square. Good to know that because I'm always forgetting the damn formula.
The quadratic formula is the result of CTS. If you become proficient at CTS then you'll not only know where the quadratic formula came from, the quadratic formula becomes completely unnecessary. CTS is faster.
Step by step approach to answer is simply super.
Thank you so much prakasam kannadi for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Take care dear 😃
Subscribed! Great explanation!
Thank you so much! Please keep supporting my channel. Kind regards 😀
You kan simply solve it with
(X= -b + and - √b squar - 4ac all over 2a, a as 6 ,b as -7 ,c as 8
Mustafa Sleiman that’s not fun
That’s not what his student asked him to do.
If we save the video to watch later how do we access it
Click on save beside like, dislike, share button and select watch later checkbox. Thanks for asking. Take care :)
On laptop/Computer you go to the UA-cam home page or simply put it www.youtube.com, then on your left side a column would appear, this column contains the following:
"Home"
"Trending"
"Subscriptions"
"Library"
"History"
"Your Videos"
"Purchases"
"Watch Later"
"Show More"
Click "Watch Later".
If you're using mobile, upon opening the UA-cam App there will be a row at the bottom that will contain the following:
"Home"
"Explore"
"Subscriptions"
"Inbox"
"Library"
Click "Library"
Upon clicking "Library"
You will than find "Watch Later".
Thank you so much for your explanation. I'm from India 🇮🇳but I can understand your explanation comletely.👍
You are very welcome Patel ji! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep sharing my channel with your family and friends. Take care dear and all the best😃
@ around 4:10 you put (7/12)^2 On both sides. later you said what sign to put in between x and 7/12 whole square...
It wasnt necessary...you simply should have said...its taking on the form of a^2 - 2ab+b^2. And will so...reduce to (a-b) ^ 2 .That way it would have been simpler....
Explanation was very good. You please shutup
You are correct.
Completing the square for this expression would be much better than beginning with the equation, as this also derives the coordinates for the vertex. If only roots are needed, then the formula is the obvious choice. Moreover, you should review adding fractions. -4/3 + 7^2/12^2 = -43/12^2. Only beauty lies in true mathematics.
Thanks dear for the nice feedback. I really appreciate that.
Take care dear and all the best😃
Have a very happy and blessed New Year!
If ax2+bx+c =0, the solution of formula is -b+-✓ b2-4ac（radical symbol)/2a.
Exactly right
Hi. What lecture app and/or tablet did you use in your online lecture? Thanks.
Why did you take the number 7/6 and multiply or divided it by half n then put exponents 2?? Could not get this step plz
7x/12+7x/12=14X/12=7x/6
Shatha Omar He’s doing that so that we can write the left side as a perfect square, that’s one of the main steps regarding how to solve by ”completing the square”.
Wonderful! Can we always take the half of coefficient number by 1\2...? And also can we also directly write the number obtained when multiplied by the coefficient number without making it smaller?
I mean can we always multiply the coefficient number by 1\2
What happened to the -7/6x?
Good!! Tell me what software do you use to write??
Hello dear, we use Camtasia TechSmith package. Thanks for asking. Take care and stay blessed😃
@5:39 in video (-429/432) reduces to -(143/144)
johnnie gilkerson hahaha, exactly
Please help me why did he put 3.143 and 3.144 @ 7:40
This is to help me refreshing for my daughter’s pre calculus . Thank you very much !!!!
When I was first looking at completing the square quadratics a few weeks ago, I stumbled across this video and it nearly blew my mind. I’ve studied a bit since and just rewatched it and bingo! Makes glorious sense now. Thank you 😊
But if you are a beginner to completing the square, start with a simple few examples that don’t involve fractions, to build your understanding first.
You are very welcome Lottie Bronte! Glad I could help you. Thanks for your comments. Please keep supporting my channel. Take care😃
In germany we have something that's called pq-Formel: when you see this equation x^2 + qx + q = 0, you can do this: X = - p/2 +/- Squarerootof [ (p/2)^2 - q]
Just subscribed ! You are a life saver
So nice of you Bisma dear! You are awesome 👍 I'm glad you liked it! Please keep sharing premath channel with your family and friends. Take care dear and stay blessed😃
Very well explained! Would using the quadratic formula result in the same answers?
What is the program used to explain the lesson please reply
Dear Ahmed, if you are talking about the software program, I use Camtasia Techsmith!
All the best :)
Why can’t I use the method you taught, by doing (6x+1)(6x-8) and x = -1/6, or x _ 4/3?
(6x-1)(6x+8) isnt equal to 6x²-7x+8
Great video. As a math teacher myself, I love how you skipped no steps.
MathGives YouPower , thanks for the honest feedback. We both are in this very noble teaching profession. Kind regards :)
Love the You Tube name you use. Reminds me of one of my favorite Adages. "Math is a Wonderful Thing. Become good enough at it, and no one will EVER be able to fool you with demagoguery."
As for this video, my 8th grade algebra teacher took us through a drill very similar to this one. I raised my hand and asked "Wouldn't it be easier to just apply the Quadratic Equation?" He replied "With an attitude like that, you'd be better off becoming an Accountant than a Mathematician." So I did LOL
All best!
where did the 7/12 and 2/1 come from? I think I have frozen my brain. I love math; this has me stumped. I would make my dad, the math prof so proud :)
Thank you so much I was able to challenge some people
question. Why do u need to flip over the 2 over 1?
Can you explain pls how and why are you dividing 7/6 by 2...where did you get that 2
I don't know why he does that but you could also use:
1) D= b Square - 4ac
2) - b + square root of D = x1
3) - b - square root of D = x2
I knew immediately that they were imaginary because the nature of the root (or the discriminatnt I.e. b^(2)-4ac) is less than zero so it must mean it has two imaginary solutions. Great video👍👍
hahaha who cares fucking knowitall hahaha
Gauss.
lol
luis portella You can’t comprehend such low level math? Hahaha.
We can ×6# 36 x^2_42x+48=0 then (6x_7/2)^2=_47/2
Could you tell me please what is the name of that programe you are using it for writing ?
Camtasia! Thanks for asking. Kind regards :)
Thank you for all this great knowledge
I know this method and this method is given in book examples
Thats what people dnt understand. Actually i ve to use that method for my hw.
That's the method every student should master. Thanks.
I’m long out of math. Like these videos to refresh my mind.
What is the purpose of completing the square? Knowing the formula I would never bother with this. Is their a reason to?
hahaahahahahahaha great question. well i guess teachers want us to fail, thats why
it can help with maximums
May I suggest that when you combined the fractions, it would have been preferable to use the lowest common denominator, 144, rather than cross-multiplying, as this would lead to easier arithmetic with smaller numbers and avoid the need to cancel by sqrt(3) later.
Great video for learners like us. But perhaps you forgot to tell the learners when you used the formula (a - b)^2 = a^2 - 2ab + b^2 in the LHS equation : x^2 - 7/6.x+ (7/12)^2 = ( x - 7/12 )^2. Instead, you brought down the negative sign before 7/12 by drawing an arrow. This confused me a little in the first hand. Thanks.
Exactly! I had the same confusion for a little while, too.
Thank you.... thank you soooo very much sir......I was facing prblm in this thing for many days....
Thanks for clearing my doubt.........😊
I am a bit lost at 7:34, how did the square root of 429 become represented as square root of 3.143 and the square root of 423 become equal to the square root of 3.144?
429 = 3 x 143 the dot was multiplication symbol, not a decimal point
@@jeffweber8244but why multiply those two? I thought it was going to be a simplification, I'm confused 😢
what software is used for writing on the youtube board
Good question
Camtasia! Thanks for asking. Kind regards :)
Ty..Can You Also Do The Checking?
ty can you also the check
very good explanation... you are really good teacher and not for duffers like some of those who commented below....
Why to fill c ( notation a, b and c) was b divided 2, where was 2 come from?
You are excellent ,that is the way I learned by doing all the steps.
Really - b+-root over b square - 4@c / 2a simple why to do this much and gone to pit of gutter
Sankalp Nagar because they have to do it that way
Can you bring the answer all over 12 (because of common denominators) or does the inclusion of 'i' not make that possible? (7 + i(143)² ) / 12 and (7 - i(143)² ) / 12 .
Pretty good sir! Best explainer
Thanks dear for the visit! You are awesome 👍 Take care dear and stay blessed😃 Kind regards
Since they have a common denominator, would you further simplify the solution as x = (7+i[143]^1/2)/12 and (7-i[143]^1/2)/12 ? Also, thank you for taking the time to show us this method. You have a very easy method of teaching that helps me to understand the material.
Dear Larry Patterson , you are absolutely correct. You may simplify it further. As a Math professor, I'd accept both versions of answers as perfectly alright. Thanks for the feedback. I'll be uploading many more video lessons pretty soon. Kind regards
Larry Patterson hi
Larry. I did this problem with my algebra class and then we watched the video together. Like you, we further simplified the final answer.
Thanks you sir for this video i got 5/5in my test of this topic thank you soo much ❤❤❤❤
Most welcome 😊
@@PreMath why in 2:20 you had to divide by 2/1
The steps would have been easier if you had just multiplied -4/3 by 48/48 (to get the 48, divide 144 by 3). Then if you are weak at fractions you could multiply both sides of the equation by 144.
I was also thinking the same
Hi, thank you for your kind, helpful explanation, but I didn't understand why you divide the 2nd term (b term) by 2? Thank you, again . . . & God Bless . . .
. . . oops, never mind, Sir . . . I just found the answer in one of your other super-great videos . . . Thank you so, so much, &, God Bless . . . :)
Dear Glo Amador, you are very welcome. Thank you so much for taking the time to leave this comment. I'm sure you are an awesome student. Keep it up. Best regards :)
So best and great video but l am daily using video wow amazing sir l like you video
thank you for this. i thought i'd never learn this, but thanks to your wisdom and clarity in explaining, i was able to do my cousin's hw
You are very welcome Earl! I'm sure you are very smart 👍 I'm glad you liked it! Please keep sharing premath channel with your family and friends. Take care dear and all the best😃 Have a very happy and blessed New Year!
where is he getting the 2/1 from?
Good question!
Because he has to divide 7/6 by 2 and 2/1 is equal to 2
please how to creat a matematics videos
Dear Hassan, I use CamtasiaTechSmith utility for my videos. Take care😃
@@PreMath Thank you so much
@@profbenchahyd8776 My pleasure 😃
Thanks sir This is my dad's phone .My teacher taught me this 5 five but i was not understanding .but yoday i saw ur video , u are fabulous I understood very fast
You're very welcome Umesh! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep supporting my channel. Take care dear 😃
You cannot take Square root of an expression. It has to be in simplified form. Else it should be in Modulus.
Good thanks
Thank you too!
Why did you divide 7/6 by 2? Please clarify.
Can I just use quadratic formula?
Sure, you can! I used the completing the square method because my student requested me that method.
Thanks for asking. Take care dear and all the best 😃
@@PreMath thank u
Yes it’s simpler.
@@manojsurya1005 Completing the square is how the quadratic formula is derived in the first place. If all you are given in a problem, is to find the roots of the quadratic equation, you can use any method that is most convenient for you.
If you are specifically told to use a particular method in the problem statement, you use that method.
3 is a factor of 144. You only needed to multiply -4/3 by 48/48 and then add with 144 denominator. You could have saved steps there
Can we multiply and divide the coefficient of x by 2 ?
Can you tell me which software you are using?
Camtasia :)
thanks
Im limited on my math. But why not split to binorminals and solve?
If you want to make surface spread there are two solutions for I. An upper curve and a lower one.
how do you get sqrt3.143 equal to sqrt3 x sqrt143.
Where?
Just solve for x to the first power and iteratively solve.
I love solving questions like this
I hate competing the square and by the way this absolutely helped me
Diff method also solve
u cross multiply fractions? I thought u find like denominator and add the fractions? (-4/3+49/144)?
why not @ 5:36 x - (7/12)^2 + (429/432) = 0 then x = (7/12) - (sqrt 143)/12 and x = (7/12) + sqrt (143)/12
Very clear to me as a student... Tnx
You are very welcome Oordnajela Zitro ! Thank you so much for taking the time to leave this comment. I'm glad you liked it! Your feedback is always appreciated. Please keep sharing my channel with your family and friends.Take care dear and all the best😃
What is the name of boared please ??
Sir can you answer this one, f(x) = x^2+3x+2 by completing the square
Dear Jose Geonzon, here is the solution:
solve by completing the square x^2+3x+2 = 0 => x^2+3x = -2 =>
x^2+3x +(3/2)^2= -2 +(3/2)^2 => (x + 3/2)^2 = -2 + 9/4 => (x + 3/2)^2 = 1/4 => take the square root on both sides and solve for x => x=-1, x=-2 are our solutions :)
Thus, you can write your function f(x) = x^2+3x+2 as in this form as well
=> f(x) = (x + 3/2)^2 - 1/4. Thanks for asking. All the best :)
7:40 i dont understand how did you get 3.143 and 3.144
need more explanation because why should we take square of 7/2. There is logic behind and this logic should be explain. good effort
Very good presentation
Thanks a lot :)
In electronic engineering, " i " is replaced with " j ". The reason for that is, lower case " i " is the current symbol in AC circuits.
Good explication. Thanks
Very very good
Very nice
Super super
Why you use xsquare coefficient is one
Amazing Good
Well done
Thank u sir
Nice explanation.
which application r u used
thanks
Thanks vinesh rathod for the feedback. Kind regards :)
X=squareroot of 7x-4 OVER 3
Really appreciate it sir👌
Multiply 6 by all the coefficients, then use the common sentence, then simplify the parentheses that can be simplified by 6.Why these long methods
Thanks Amin for you nice feedback.
Take care dear and all the best😃
Have a very happy and blessed New Year!
Omg 😳
1:28 "The next thing what we want to do" ... I'm so glad this isn't an English lesson ... "isn't it".
With two sheep flying, one yellow and the other heading right, how much does a pound of asphalt cost, given that the cow is 10 years old?
It costs the taste of musik made from star dust.
@@Nissenov lol