Question

How do you factor the trinomial `9x^2 + 27x + 18`?

Answer 1

9(x + 1)(x + 2)

Explanation:

`y = 9 y'= 9(x^2 + 3x + 2).`
To factor y' use shortcut since a - b + c = 0. One factor is (x + 1) and the other is `(x + c/a) = (x + 2)`
`y = 9(x + 1)(x + 2).`