Question

Factoring p^2+9p-36.

Answer 1

(p +12)(p -3)

Explanation:

To factorise into double brackets, we need to find 2 numbers which add to 9 and multiply to -36.

12 × -3 = -36, and 12 + -3 = 9

We put each number in a bracket with p, so we get (p +12)(p -3)