Answer:
11x^2 −6x−9
Step-by-step explanation:
9x^2 – 10x + 1 - ( -2x^2) + 4x – 10.
The opposite of −2x^2 is 2x^2
9x^2 −10x+1+2x ^2 +4x−10
Combine 9x^2 and 2x^2 to get 11x^2 .
11x^2 −10x+1+4x−10
Combine −10x and 4x to get −6x.
11x^2 −6x+1−10
Subtract 10 from 1 to get −9.
11x^2 −6x−9
