Question

Which of the binomials below is a factor of this trinomial?

x^2 - 13x + 30

A. x + 5

B. x - 10

C. x^2 + 5

D. x + 6

Answer 1

B. x - 10

Explanation:

x² - 13x + 30 = (x - 3)(x - 10)

x² + (a + b)x + ab = (x + a)(x + b)