Question

How do you factor the trinomial `p^2+ 9p + 20`?

Answer 1

Factor `y = p^2 + 9p + 20`

Ans: y = (p + 4)(p + 5)

Explanation:

Find 2 numbers knowing sum (+9) and product (20).
Factor pairs of (20) --> (2, 10)(4, 5). This sum is 9 = b. Therefor, the factored form is : `y = (p + 4)(p + 5)`