Solving Radical Equations With Square Roots, Cube Roots, Two Radicals, Fractions, Rational Exponents
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- Опубліковано 29 січ 2017
- This Algebra 2 video tutorial focuses on solving radical equations with square roots, cube roots, two radicals, fractions, and rational exponents.
Fundamental Theorem of Algebra: • Fundamental Theorem of...
Rational Expressions - Basic Intro:
• Rational Expressions -...
Simplifying Rational Expressions:
• Simplifying Rational E...
Multiplying Rational Expressions:
• Multiplying Rational E...
Dividing Rational Expressions:
• Dividing Rational Expr...
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Adding & Subtracting Rational Expressions:
• Adding and Subtracting...
Rational Expressions - Unlike Denominators:
• Adding and Subtracting...
Simplifying Complex Rational Expressions:
• Simplifying Complex Ra...
How To Solve Rational Equations:
• Solving Rational Equat...
Rational Equations - Extraneous Solutions:
• Extraneous Solutions o...
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Horizontal and Slant Asymptotes:
• Horizontal Asymptotes ...
Finding Rational Functions Given 2 Points:
• How To Find a Rational...
Rational Functions - X and Y Intercepts:
• How To Find The X and ...
Graphing Advanced Rational Functions:
• Graphing Advanced Rati...
Rational Inequalities:
• Rational Inequalities
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yes the math videos from 2006 IS REALLY HELPING
I hate that commercial
that ad just popped up for me lol. i was ticked off by it too and its not bc an ad popped up in the middle of my 2017 video grr
Jeysreee C 😂
Stupid ad i hate it
THIS COMMENT
the only YT channel that has been saving my ass since high school all the way to college
Congrats my friend
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"What did it cost?"
500 trees and my fucking sanity, Gamora
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I had teachers like that. Impossible to learn from someone who thinks you should totally understand everything the first time it was explained.
same
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MR. Organic Chemistry Tutor, thank you for another awesome video/lecture on Solving Radical Equations With Square/Cube Roots, Two Radicals, Fractions and Radicals Exponents in Algebra. These Algebraic topics will only improve Mathematical and Analytical skills for students/non-students world wide.
thank you so much dude! i was really not understanding in class but you made it so easy, now hopefully i remember this for tomorrows quiz xD
You're welcome
You're literally the reason my GPA is what it is.
Bro my math teacher legit just solves it in her head writes it on the white board and then erases it 2 seconds later. You are such a big help bro, keep it up.
This is the easiest way to understand it,and more clearly,Thanks!!
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i am 22 years old. Preparing to enroll into online college classes your videos have provided with so much information then before. I genuinely feel more confident and brave enough to solve any mathematical which comes my way. You are doing a terrific job teaching these stuff. Very huge round of applause
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Thank you man this helped a-lot .
I will let you guys know if I passed my radical equations quiz lol. I'm very ass at math wish me luck
I got a 60 time to go committe suicide
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Roy Mane 65 is passing
10:40 a square root can have 2 answers on that case -2.5 or 2.5
No, that's only when you take the square root on both sides of the equation, that equation already had the square root so its not plus and minus. Same reasoning the square root of 25 is just 5, not 5 and -5.
Well ,,done,,excellent,,I watched a few,,,but I only give you an excellent,,,you know why ? Because you started with very simple problem,,,
thank you this is really helpful
The example at 2:50 actually has two solutions: X = 6 and X = -2
Thank you man
thank you so much
should I always plug in the solutions in the equation to make sure that the soultions satisfy the equation?
It's not a bad idea. I usually check whenever I have at least two solutions.
we learn on youtube and on our spare time we go hang out with our classmates and teachers
very good method
14.57 should be sq.rt. of x shd be taken as denominator and solve left hand side and you get 9/6 which becomes 3/2=6 sort. x
Divide both side by 6 and you get 1/4=sq.rt.x so the answer is 1/16.
Do you only check to see if the solutions work if there are two solutions or should you do it every time?
For example: Would I check with just the solution x=9? Or would I check if it was a quadratic and there were two zeroes found?
I know I am not the person that made this video, however if it helps, I believe I have an answer! My teacher told me that you must always check the answers you get (whether it is two solutions or not). I am not sure if my teacher was wrong, but either way checking your answers is a good idea! ^^
I hope this helped!!
Haha my favorite online teacher
Not me in the bathroom during my final to learn how to do this last second
This saved me
for the equation of sqrt(x+1) = 2x-13. Before you do anything else, you must condition it x+1 >= 0 and 2x-13 >=0 therefore solution must be greater than 13/2 = 7.5. once you get solution, you can immediately drop x=5.25 out, keep x=8
can you explain a bit more on how you did the condition x+1>=0 and 2x-13=0 so that i can understand everything else.
thx
I wanna know how he got the -13 there
Thanks 🌾😇 i have a test in 3 days
thank you sir
IN THE FIRST 2 EXAMPLE CAN YOU DO THE CHECKING?
If there is no number next to the equal sign do we say it is equal to zero? Or do we just square it and say its square is equal to a square?
What’s the equivalent definition of “Conjugate surds” in America Curriculum?
Y’all my algebra eoc is tomorrow 👺 wish me luckk
Wow...that’s great😉
I have a test tomorrow all about radicals, wish me luck 🙏
Let me know how you did :)
So?
3:45
In Blitzer I see this rule :
If X^(n/m)=A then, IF n IS EVEN, then, X= PLUS OR MINUS A^(m/n)
In the equation that is solved here, n=2, so n is even.
So
(1) (x-4)^2/3=4
(2) (cube root of x-4) ^2 =4
(3) cube root of x-4 = plus or minus (square root of 4)=plus or minus 2
(4) (cube root of x-4)^3 = ( plus or minus 2)^3 = plus or minus 8
(5) x-4=plus or minus 8
(6) x = 12 or x= -4
Is this correct?
thanks ♥
It was very helpfull. Thanks for sharing 😊
What is the app u used
My teacher foils in like 2 seconds mentally and I can’t keep up
Math makes my head hurt 🤯
What if there's a square root on one side and a square on the other? Something like this; sqrt(x-5)=x^2+5. I've been trying this for a while and get no where.
You're goated
11:50 I think you still have to foil this even if it’s positive
My brain left my soul and body at fourth
problem
Thanks for this great video, but why do we need to foil in the third exercise? I dont get it. :(
It’s like doing 2 digit multiplication.
You multiply the ones and tens digit in one one number by the ones and tens digits it the other number
12^2 = 12*12 = (10+2)(10+2) = 100+20+20+4 = 144
The mistake that people make is like doing (10+2)^2 as 10^2+2^2=100+4=104 which as you know does not equal 144
how would you solve this equations square root 2x - square root of x+1 = 1
Cynthia Alley you square both sides to remove the square root so you will be left with. 2x-x+1=1.
Now 2x-x=1-1
2x-x=x
1-1=0.
So x =0.
Fill in the answer in the original equation it will be 1=1
@@adamabdallah2604 hey question, can you actually square the sqrt of 2x - sqrt of x + 1 = 1
Because as far as I know you can't square two terms separated by plus sign or minus sign? (unless you're gonna foil it, which I think you didn't..?)
شكرا
what about tricky ones like ✓x² = x, you'd expect it to be x = x always true, but the result is x ≥ 0
7:22 negative 53 squared
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Great
Can you answer this one?
Square root of (x-2)=square root of (x)-1
x=1
U going fast dude
lol, you can pause things.
ua-cam.com/video/69NrUX79FTI/v-deo.html
Why is that the equation on 10:50 doesn't work? Can't the square root of 6.25 be -2.5? I thought normal radicals usually have both negative and positive roots? Isn't -2.5^2 the square root of 6.25 as well? X can be both 8 and 5.25.
ua-cam.com/video/69NrUX79FTI/v-deo.html
fuck this quarantine sh*t i cant fricking learn by myself can it all end already, I thought I would never say this but i miss school :(
but what if it is like the square root of x plus 4 minus 3 equals 1how would i solve it with a low number?
The answer will be 0.
(a+b)^2=(a-b)(a+b)
1:08 x = 61
You have to do this in organic chem?! I’m doing this in algebra 2 ugh
What is the purpose of this comment?
I know you see me what’s the purpose of yours
3(2x-4)^2/3+5=17
The answers are x=6 and x=-2
4:42 this is what I’m looking for...
how am i finna remember da quadratic formula on test day!!!!!
lmfaooo
Tissue papers, easier to hide
one year late but negative (-) (b)oy couldn't decide (+/-) whether to go to a RADICAL party, so (b)oy being SQUARED missed out (-) on 4 (a)wesome (c)hicks and the whole party lasted until 2 (a)m.
Narguin Lee that doesn’t make any sense at all
Eva Schipper negative= -, boy= b, couldn’t decide = +/-, radical party = square root, boy being squared= b^2, missed out= -, four awesome chicks= 4ac, party lasted until over 2 am so that means divided by 2a
10:37 shouldn't sqrt of 6.25 be ±2.5?
Meaning answer can be +2.5 or - 2.5
So ±2.5 = -2.5 is correct...? Or is it only half correct or what
Sir please solve this 60/5x =60/6x +12/60
I can solve it
60/5 x = 60/6 x + 12/60
12x = 10x + 12/60
LCD: 60
Multiply by everything by 60
(⁶⁰) 12x = (⁶⁰) 10x + (⁶⁰) 12/60
720x = 600x + 12
Move variable to left
720x - 600x = 12
120× = 12
Divide both sides by 120
× = ¹/¹⁰
LightlessFade thank you sir
My teacher said the answer was wrong even though i did it the exact same way 2:29
why dont you move the 5 to the other side instead of dividing it on both sides?
It’s the same thing just ignore it
Uh, which problem are you asking about? Can you link it?
The square root of 6.25 is +-2.5, not just +2.5, which means 5.25 is not an extraneous solution. Just saying.
@John nope....nope you're not.
Yes but again he is only considering the principal root. So negatives are going to be avoided. And to actually check if the final answer works you have to substitute this to the x in the equations and this works.
How is 4+6 = to 8 and not 10
Put -32x-21x This is easier.