Question

-8x^2-9- -5x^2+5x

Answer 1

Wrong again , even for this easy simplification

-8x^2 - 9 - -5x^2 + 5x , I will assume we can replace - - with +
= -3x^2 + 5x - 9

Answer 2

[AI-generated answer — Bot]

-13x^2 - 4