Question

How do you find the sum or difference of `(4+2a^2-2a)-(3a^2-8a+7)`?

Answer 1

`-a^2+6a-3`

Explanation:

`(4+2a^2-2a)-(3a^2-8a+7)`

`:.=(2a^2-2a+4)-(3a^2-8a+7)`

`:.=2a^2-2a+4-3a^2+8a-7`

`:.=-a^2+6a-3`