How do you simplify (-x^2 +9x -2) -(9x^2- 4x+ 4)?

2 Answers

-10x^2 + 13x - 6

Explanation:

All you have to do is pretty much subtract the different powered variables (Ex. x^3, x^2, x)
so ...
-x^2 - 9x^2 = -10x^2

9x - (-4x) = 13x

-2 - 4 = -6

Answer: -10x^2 + 13x -6

Mar 10, 2018

(x^2+9x-2)-(9x^2-4x+4)=-8x^2+13x-6

Explanation:

(x^2+9x-2)-(9x^2-4x+4)
=x^2+9x-2-9x^2+4x-4
=x^2-9x^2+9x+4x-2-4
(1-9)x^2+(9+4)x-(2+4)
-8x^2+13x-6