Question

What is `((2x^2-7x-20)+(-x^2 + 3x-12))/(x+4)`?

Answer 1

`x-8`

Explanation:

Collecting like terms

`(2x^2-x^2-7x+3x-20-12)/(x+4)`

`(x^2-4x-32)/(x+4)`

Not that `4xx8=32" and "8-4=4`

Factoring

`((x-8)cancel((x+4)))/cancel((x+4))" " =" "x-8`