Question

Write the expression 5x(x + 9) - 7(x + 9) in complete factored form.

A. (x + 9)(x + 9)
B. (5x - 7)(x+9)
C. (5x – 7)(x + 9)(x + 9)
D. (5x2 + 45x)(-7x - 63)

Answer 1

B. (5x - 7)(x+9)

Explanation:

5x(x + 9) - 7(x + 9

Factor out the quantity (x+9)

(x+9) (5x-7)

Rearrange the order

(5x - 7)(x+9)