Question

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

x2 - 13x + 42







A.

x2 + 12








B.

x + 84








C.

x + 7








D.

x - 7

Answer 1

(x-7)(x-6) is what it factors to, so D

Answer 2

thanks :)

Answer 3

x^2 - 13x + 32 = 0

(x - 6)(x - 7) = 0.

x = 6 AND x = 7.