Question

Please someone help me, ASAP
http://assets.openstudy.com/updates/attachments/5567ae5be4b0ae03fc815917-lurking4help-1432858214559-wordmathproblem.jpg

Answer 1

Are you familiar with like terms and unlike terms?

Answer 2

no not really

Answer 3

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.

Answer 4

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.

Answer 5

Are you following so far?

Answer 6

yes , i'm starting to get it

Answer 7

So what would be 4x^3 -2x^3?

Answer 8

would it be 2x^3

Answer 9

Correct. Just think of x^3 as apples, x^2 as oranges, so what would be
5x^3-3x^2+4x^3-x^2 ?

Answer 10

i think it would be
x^2(9x−4)
but i'm not sure

Answer 11

Yes, this is correct. 9x^3-4x^2 would have been totally acceptable as well.
Good!

Answer 12

Are you familiar with the distributive property of multiplication?

Answer 13

Like 2(x+2) = 2x+4

Answer 14

yes i'm familiar with it

Answer 15

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)

Answer 16

yeah i got this part, its 2y^2-9 , but i can't the other part of it which is y^2-?

Answer 17

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.

Answer 18

so the answer would look like this right, we get 2y^2-9

Answer 19

Exactly the same as yours.

Answer 20

woww thank you some much , for explaining it to me very well

Answer 21

You're welcome! :)

Answer 22

k..

Answer 23

Help again please

Answer 24

@mathmate