Question

10 Points. Subtract The Polynomials. Please explain if you can.

Answer 1

`-8ab-a+8`

Explanation:

`(-9ab-a+9)-(-ab+1)`

First, we have to expand

`-9ab-a+9+ab-1`

The above is equivalent to...

`-9ab+ab-a+9-1`

`-8ab-a+8`