anonymous
  • anonymous
Please someone help me, ASAP http://assets.openstudy.com/updates/attachments/5567ae5be4b0ae03fc815917-lurking4help-1432858214559-wordmathproblem.jpg
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
mathmate
  • mathmate
Are you familiar with like terms and unlike terms?
anonymous
  • anonymous
no not really
mathmate
  • mathmate
Like terms are those terms that have the same powers of variables, even though the coefficient (including the sign) may be different. For example, 2x^2 and -6.5x^2 are like terms.

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mathmate
  • mathmate
When you have to add or subtract two expressions, you need to group together the like terms, because you can then add/subtract the coefficients among the like terms.
mathmate
  • mathmate
Are you following so far?
anonymous
  • anonymous
yes , i'm starting to get it
mathmate
  • mathmate
So what would be 4x^3 -2x^3?
anonymous
  • anonymous
would it be 2x^3
mathmate
  • mathmate
Correct. Just think of x^3 as apples, x^2 as oranges, so what would be 5x^3-3x^2+4x^3-x^2 ?
anonymous
  • anonymous
i think it would be x^2(9x−4) but i'm not sure
mathmate
  • mathmate
Yes, this is correct. 9x^3-4x^2 would have been totally acceptable as well. Good!
mathmate
  • mathmate
Are you familiar with the distributive property of multiplication?
mathmate
  • mathmate
Like 2(x+2) = 2x+4
anonymous
  • anonymous
yes i'm familiar with it
mathmate
  • mathmate
ok, now we can get to work on the problem. Can you simplify the expression by removing all parentheses? (-3y^2-8)-(-5y^2+1)
anonymous
  • anonymous
yeah i got this part, its 2y^2-9 , but i can't the other part of it which is y^2-?
mathmate
  • mathmate
2y^2-9 is the complete answer. Put a 2 in the box before the y^2, and put a 9 in the other box. I think the program is kind of babysitting us.
anonymous
  • anonymous
so the answer would look like this right, we get 2y^2-9
mathmate
  • mathmate
Exactly the same as yours.
anonymous
  • anonymous
woww thank you some much , for explaining it to me very well
mathmate
  • mathmate
You're welcome! :)
anonymous
  • anonymous
k..
anonymous
  • anonymous
Help again please
1 Attachment
anonymous
  • anonymous
@mathmate

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