Question

Factor the expression completely.

18x² - 8
OA. 2(9x² - 4)
OB. 2(3x-2)(3x - 2)
OC. 2(3x+4)(3x - 1)
D. 2(3x+2)(3x - 2)

Answer 1

D

Explanation:

Use the FOIL Method. First, Outer, Inner and Last. By distributing two you get 6x(3x+2)-4(3x+2). Distribute 6x and you get 18x^2+12x-4(3x+2). Distribute -4 and you get 18x^2+12x-12x-8. Combine like terms and you get 18x^2 - 8.