Question

Factor this trinomial.
x² + 11x + 18

Answer 1

(x + 9)(x + 2)

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)

Answer 2

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