Question

I think I know the answer but I need help??

Choose the correct simplification of (3x3 + 2x2 − 5x) − (8x3 − 2x2).

a. −5x3 + 4x2 − 5x
b. 5x3 + 2x2 + 5x
c. −5x3 − 4x2
d. 5x3 + 2x2

Is the answer c?

Answer 1

gt rid of the parentheses...

3x^3 - 8x^3 + 2x^2 + 2x^2 - 5x

nope..it's not C

Answer 2

just combine the like terms in what i wrote @CharlesDavid and you'll get the right answer

Answer 3

Remember when you have -(a-b) when you remove the parenthesis it becomes -a+b

Answer 4

OK I'll try it and see what I get

Answer 5

thanks!

Answer 6

welcome

Answer 7

it's a.