Question

Please help it would mean alot

Answer 1

`-a^2-4a+7`

Explanation:

`4a^2-12a^2+9a^2 = 11a^2-12a^2 = -a^2`

`-3a - 9a + 8a = -12a + 8a = -4a`

`8 - 1 = 7`

`-a^2-4a+7`