Question

Factor 9x2 - 4y2 Group of answer choices

(3x - 2y) (3x + 2y )
(3x - 2y) (3x - 2y )
(x - 2y) (x + 2y )
(3x - y) (3x + y )

Answer 1

(3x-2y)(3x+2y)

Explanation:

Proof:

(3x-2y)(3x+2y)-use FOIL method (First, Outer, Inner, Last)

3x*3x+2y3x-2y3x-2y*2y

9x^2+0-4y^2

9x^2-4y^2

The answer is (3x-2y)(3x+2y).