Question

How do you simplify `(2x - 1) (x + 3) - (3x + 5) (x - 6)`?

Answer 1

I found: `-x^2+18x+27`

Explanation:

You can first multiply and get rid of the brackets:
`=2x^2+6x-x-3-3x^2+18x-5x+30=`
Then collect similar terms (for example all the `x^2`):
`=-x^2+18x+27`