Answer:
(x + 9)(x + 2)
Step-by-step explanation:
x² + 11x + 18
consider the factors of the constant term (+ 18) which sum to give the coefficient of the x- term (+ 11)
the factors are + 9 and + 2 , since
9 × 2 = 18 and 9 + 2 = 11 , then
x² + 11x + 18 = (x + 9)(x + 2)
