I'm 25 and reviewing this! At first my ego said no, but after realizing I couldn't solve the SECOND problem... always gotta go back to the FUNDAMENTALS
The question which explains these two problems is, "what is being raised to the power of 2". When you write -2^2, that means you are raising 2 to the power of 2. The negative sign in front of the 2 has nothing to do with the exponent. Therefore it will remain in front of the expression after 2 has been raised to the power of 2. When you take (-2)^2 you are raising -2 to the power of 2. The parentheses indicates that the negative sign in front of the 2 is part of what is being raised.
I am confused. How did you know to plug 3 where the X is and -2 where the Y is? I see a -2 next to the Y that makes sense, I think, but I see a 5 next to the X not a 3. I was never taught algebra in school, so I’ve been trying to learn it. Thank you.
I am not sure which example you are talking about. If you are looking at the second example, parts of the equation reads -2 x (-3)^2. Remember (-3)^2 = 9
My question was: In reference to the portion of the last equation: When you -2y^2 x^2 + 1x^2 y^2 and it = x^2y^2 how did you know to apply the 2y to the 1x but then I realized you were applying it to both variables no matter the order due to the answer. Even tho you explained in detail earlier about that, it didn't sink till I saw the answer the 4th time. Thanks for the vid. I'm in the process of self teaching elem algebra to test out of the remedial math class via the elem. alg. accuplacer.
(-3)2=9. The reason is the 2 is stating to multiply the number in parenthesis by itself. -3 x -3=9 not -3x2=6 Another example (-5)2 means -5*-5=25 Hope this helps you
PEMDAS (the order of operation). Since you cannot simplify the inside of the parentheses, we move to the next letter which is E (exponents). There are no exponents so we move to M and D (multiplication and division). Multiply 6 x 3K = 18K. Then we do -5 x K = -5K. Then we do -5 x 2=-10. We now end up with 18K - 5K - 10 = 13K - 10
Parts of the algebra course teaches you how to work with variables. Variables are the unknown numbers in an equation, usually x and y. My example in the video covers an equation in which it is assumed that x=3 and y= -2. Knowing the value of x and y, I replace my x and y with the given values. That is why x turns into 3 and y turns into -2. The fact that there is already a -2 in front of the y does not have anything to do with me replacing the y with -2. Hope it helps.
The last line is only composed of addition and subtraction. Therefore the math is pretty straight forward. That is why I jumped to the answer right away. 16 - 18 = -2. Then -2 + 5 = 3. I hope that makes sense. Let me know if you have any other questions
It is easy to forget the steps. So don't sweat it! The important thing to remember is PEMDAS (the order of operation). The way to solve your problem is the following: 1) Distribute the 8 onto both terms in the parentheses. 8*7X + 8*18 2) Your new equation is now 56X + 144 = 368 3) Subtract 144 from both sides which now leaves you with 56X = 224 4) Divide both sides by 56 which now leaves you with X = 4 I hope that helped. Let me know if you run into any more problems. I'm happy to help.
I am glad you partially agree with you. You do make an important point. The point is that you can break down this aglebraic expression in a few ways. Depending on how far along in the math studies you are, there are different ways of approaching this problem. What I did was, I jumped a step while explaining (verbally) what I did. What I should have done instead (to make it clearer), was to say: - 2 x (-2) x 3 = - (-12), which is equal to 12. Thank you for the input and feedback
Don't forget the rule of multiplying positive and negative numbers. Negative times another negative number = Positive. -2*(-2)*(3) = Positive 12 because you are multiplying two negatives. I am glad you enjoyed the video. Let me know if you have any other questions.
I made an account just to ask you a question & by the time I tried to word it right I forgot what the base of the question was. I went back & watched the portion of the video in which I'm referring to and I understood it all the sudden.
+Chris Burrell -2 squared is the same as saying: - 2 x 2. A negative times a positive equals a negative. (-2) squared is the same as saying -2 x -2. A negative times a negative equals a positive. I hope that makes sense
Thank you. I'm preparing for a college Accuplacer exam & this tutorial helped me figure out a problem that has been bugging me for over 2 hours. My brain does not think Algebraically.
elainebelyeu wow. Fuck you for being able to use a freaking phone during an exam. I guess I'm fucked for life because that shit doesn't fly in Georgia.
Well if you think about it , the subtraction sign was already there , now positive or negative number it doesn't effect adding or subtraction example : 5(3) + 3 - 2(-2)3 = what set these 2 equations apart is the subtraction sign , regardless what happens on eiither sides at the end it is a Y - Z = ? , but if it were to be this problem I will agree with you : 9x + 4 and -5x + 27 ; what is X and the absolute value , then ill agree with you
I got a 53 in my elementary algebra accuplacer. So I legit thought I was borderline retarded. After seeing this I already knew all of it, so why I struggled is a mystery.
hello , so I was reviewing the video and i think everything is great , but I've come to notice that in the first equation you might of gotten confused .Now 5(3)+3 - 2(-2)(3) = 6 , I think you may have accidentally changed from subtraction into an addition when you said "Positive 12" , Overall the videos great thank you !
The question which explains these two problems is, "what is being raised to the power of 2". When you write -2^2, that means you are raising 2 to the power of 2. The negative sign in front of the 2 has nothing to do with the exponent. Therefore it will remain in front of the expression after 2 has been raised to the power of 2. When you take (-2)^2 you are raising -2 to the power of 2. The parentheses indicates that the negative sign in front of the 2 is part of what is being raised.
I'm 25 and reviewing this! At first my ego said no, but after realizing I couldn't solve the SECOND problem...
always gotta go back to the FUNDAMENTALS
The question which explains these two problems is, "what is being raised to the power of 2". When you write -2^2, that means you are raising 2 to the power of 2. The negative sign in front of the 2 has nothing to do with the exponent. Therefore it will remain in front of the expression after 2 has been raised to the power of 2.
When you take (-2)^2 you are raising -2 to the power of 2. The parentheses indicates that the negative sign in front of the 2 is part of what is being raised.
Why did he stop uploading? 😭
I'm glad I was able to help. Good luck on the accuplacer!
Let me know if you ever have any questions.
I am confused. How did you know to plug 3 where the X is and -2 where the Y is? I see a -2 next to the Y that makes sense, I think, but I see a 5 next to the X not a 3. I was never taught algebra in school, so I’ve been trying to learn it. Thank you.
I am not sure which example you are talking about. If you are looking at the second example, parts of the equation reads -2 x (-3)^2. Remember (-3)^2 = 9
Can you please explain how -2^2 is different from (-2)^2, how are they operated on differently?
My question was:
In reference to the portion of the last equation: When you -2y^2 x^2 + 1x^2 y^2 and it = x^2y^2 how did you know to apply the 2y to the 1x but then I realized you were applying it to both variables no matter the order due to the answer. Even tho you explained in detail earlier about that, it didn't sink till I saw the answer the 4th time. Thanks for the vid. I'm in the process of self teaching elem algebra to test out of the remedial math class via the elem. alg. accuplacer.
(-3)2=9. The reason is the 2 is stating to multiply the number in parenthesis by itself. -3 x -3=9 not -3x2=6
Another example (-5)2 means -5*-5=25
Hope this helps you
PEMDAS (the order of operation). Since you cannot simplify the inside of the parentheses, we move to the next letter which is E (exponents). There are no exponents so we move to M and D (multiplication and division). Multiply 6 x 3K = 18K. Then we do -5 x K = -5K. Then we do -5 x 2=-10. We now end up with 18K - 5K - 10 = 13K - 10
The video is a review of some basic elements and operations used in algebra 2. Therefore the title "a review of elementary algebra"
Parts of the algebra course teaches you how to work with variables. Variables are the unknown numbers in an equation, usually x and y. My example in the video covers an equation in which it is assumed that x=3 and y= -2. Knowing the value of x and y, I replace my x and y with the given values. That is why x turns into 3 and y turns into -2. The fact that there is already a -2 in front of the y does not have anything to do with me replacing the y with -2. Hope it helps.
In the first equation example, -2•2=4? I thought a negative multiplied by a positive is going to be a negative #?
I am glad to hear you were able to figure it out. Let me know if you ever have any questions in the future regarding your algebra studies.
on the 4x^2-2y^2+5 why is the answer positive 3? it seems like on the last line you ignored order of operations. could you please explain?
The last line is only composed of addition and subtraction. Therefore the math is pretty straight forward. That is why I jumped to the answer right away. 16 - 18 = -2. Then -2 + 5 = 3. I hope that makes sense. Let me know if you have any other questions
very helpfull had to take my college placement test. thnks visionmath
It is easy to forget the steps. So don't sweat it! The important thing to remember is PEMDAS (the order of operation).
The way to solve your problem is the following:
1) Distribute the 8 onto both terms in the parentheses. 8*7X + 8*18
2) Your new equation is now 56X + 144 = 368
3) Subtract 144 from both sides which now leaves you with 56X = 224
4) Divide both sides by 56 which now leaves you with X = 4
I hope that helped. Let me know if you run into any more problems. I'm happy to help.
WHY DID YOU TURN -12 TO +12 IN THE FIRST PROBLEM?
I am glad you partially agree with you. You do make an important point. The point is that you can break down this aglebraic expression in a few ways. Depending on how far along in the math studies you are, there are different ways of approaching this problem.
What I did was, I jumped a step while explaining (verbally) what I did. What I should have done instead (to make it clearer), was to say: - 2 x (-2) x 3 = - (-12), which is equal to 12. Thank you for the input and feedback
visionmath exactly. Because two times -2 does not equal positive 12..
That threw me off as well
I need a teacher that does not skip these very important minut details. Woe is me.
thank you so much
Don't forget the rule of multiplying positive and negative numbers. Negative times another negative number = Positive. -2*(-2)*(3) = Positive 12 because you are multiplying two negatives.
I am glad you enjoyed the video. Let me know if you have any other questions.
I made an account just to ask you a question & by the time I tried to word it right I forgot what the base of the question was. I went back & watched the portion of the video in which I'm referring to and I understood it all the sudden.
(-3) squared
How did it became 9?
A negative times a negative equals a positive
A negative Squared becomes a Positive. Stone River.
Aya Ishikawa (-3) squared is like 3 multiplied to 3 and negative times negative is a positive
Very helpful, thank you!
Cool
This is gooD.
why don't you use pemdas?
-2 x -2 x 3 = +12. Remember that negative times negative = Positive. Therefore, -2 x -2 = 4. Then 4 x 3 = 12. I hope that makes sense
I will. Thank you.
How did he get 9??
-2 * -2 * 3 = 12, just like the video demonstrates.
How is it positive 3
Which part are you referring to?
Two Negative Signs combine to form a Plus. Very Important Don't forget it. Study Hard.
Because you add from left to right. 16 minus 18 is negative 2 plus 5 equals positive 3 👍🏾
Is there anything in particular that I can help you with? Thank you for subscribing
hello:)) im struggling with these type of math problems:
8(7x+18)=368
I kno its east but I keep forgetting the steps.....please help...thank u much
how did (-3)2 became 9? confused. ;(
Thank you
THANK YOU SO MUCH! This was really helpful!
Thank you!
Got u cuz now it makes sense
Anyone else here at 1 am?
in which grade would you teach this?
Probably 7th or 8th grade for the average class.
adam lewis grade 7
3:35 How?!
+Chris Burrell -2 squared is the same as saying: - 2 x 2. A negative times a positive equals a negative. (-2) squared is the same as saying -2 x -2. A negative times a negative equals a positive. I hope that makes sense
Thank you. I'm preparing for a college Accuplacer exam & this tutorial helped me figure out a problem that has been bugging me for over 2 hours. My brain does not think Algebraically.
elainebelyeu wow. Fuck you for being able to use a freaking phone during an exam. I guess I'm fucked for life because that shit doesn't fly in Georgia.
how often do someone be on here
-3 times -3 is a postive 9
Well if you think about it , the subtraction sign was already there , now positive or negative number it doesn't effect adding or subtraction example : 5(3) + 3 - 2(-2)3 = what set these 2 equations apart is the subtraction sign , regardless what happens on eiither sides at the end it is a Y - Z = ? , but if it were to be this problem I will agree with you : 9x + 4 and -5x + 27 ; what is X and the absolute value , then ill agree with you
6(K3)-5(K+2) HOW DO I RESOLVE THIS PLEASE HELP?
:(
I got a 53 in my elementary algebra accuplacer. So I legit thought I was borderline retarded. After seeing this I already knew all of it, so why I struggled is a mystery.
This isn't an algebra 2 problem .... algebra 2 is harder than this
Yo when i have my kids im coming to your school brotha
How is number 1 30. ._.
I would love to help you out. Is there a specific part of the equation or solution that you do not understand?
hello , so I was reviewing the video and i think everything is great , but I've come to notice that in the first equation you might of gotten confused .Now 5(3)+3 - 2(-2)(3) = 6 , I think you may have accidentally changed from subtraction into an addition when you said "Positive 12" , Overall the videos great thank you !
16 - 18 + 5 don't u use pemdas
+WENDELL ADOM Yes I am using pemdas
Hi.
i kno its easy*******
this is supposed to be elementary!!!!!!!! this is middle skool stuff
Octavia Hargrove before all of “middle schhol” it was still part of elementary.., like grade 6
terrible.
Julian Moran your profile picture is terrible
The question which explains these two problems is, "what is being raised to the power of 2". When you write -2^2, that means you are raising 2 to the power of 2. The negative sign in front of the 2 has nothing to do with the exponent. Therefore it will remain in front of the expression after 2 has been raised to the power of 2.
When you take (-2)^2 you are raising -2 to the power of 2. The parentheses indicates that the negative sign in front of the 2 is part of what is being raised.