Question

Subtract -7a^2+3a-9 5a^2-6a-4

Answer 1

I think that's the answer heh

Explanation:

–3 [(8a−6a² + 9)+ (−10a−8+8a²)]

=−3−[8a−6a² + 9+ −10a− 8 + 8a²]

=−3−[(8a − 10a) + (−6a² + 8a² ) + (9 − 8)]

=−3−[−2a + 2a² +1]

=−3 + 2a − 2a² −1

= +2a − 2a² −4

=−2a² + 2a −4