Question

Determine which of the following expressions can be factored to (x – 8) (x – 9)?

Answer 1

x^2 -17x+72

Explanation:

(x – 8) (x – 9)

FOIL

first x*x =x^2

outer -9*x = -9x

inner -8*x = -8x

last = -9*-8 = 72

Add them together

x^2 -9x-8x+72

x^2 -17x+72