Question

(x²+x-2)+(-2x²-9x-7)

Answer 1

`-x^2-8x-9`

Explanation:

Combine each part of the equation together to get the answer:

x² + (-2x²) = x² - 2x² = -x²

x + (-9x) = x - 9x = -8x

-2 + (-7) = -2 - 7 = -9

That gives you the final answer of:
`-x^2-8x-9`

Hope this helps!