Question

Use the FOIL method to find the product below.

(x + 5)(x -3x)
O A. x2 + 5x - 15
O B. x2 +27 - 15
O c. x + 27 – 15x
Ò D. x + 5x – 15x

Answer 1

Explanation:

FOIL -----> First, Outer, Inner, Last

(x+5)(x-3x) =x*x + x*(-3x) + 5*x + 5*(-3x)

= x² - 3x² + 5x - 15x

= -2x² - 10x