Factor out completely the polynomial below.

You have the following polynomial:

5x² + 30x + 45

in order to factorize the previous expression, multiply and divide by 5:

(5x² + 30x + 45)(5/5) =

(x² + 6x + 9)(5)

next, consider that the first factor is a perfect square, in fact:

x² + 6x + 9 = (x + 3)² = (x + 3)(x + 3)

then, you have:

(x² + 6x + 9)(5) = (x + 3)(x + 3)(5)

finally, enter 5 factor into one of the algebraic factors:

(x + 3)(x + 3)(5) = (5x + 15)(x + 3)

no idea

step-by-step explanation: