Question

How do you simplify `-8x ^ { 2} + 2x - 2x ^ { 2} + 7x + 9`?

Answer 1

See a solution process below:

Explanation:

First, group like terms:

`-8x^2 - 2x^2 + 2x + 7x + 9`

Now, combine like terms:

`(-8 - 2)x^2 + (2 + 7)x + 9`

`-10x^2 + 9x + 9`