Answer:
(4x² + 24x)- (12x + 72)
4x( x+ 6)- 12(x + 6)
ans = (4x - 12)(x + 6)
4(x-3)(x+6)
Explanation:
Factor out the 4
4(x2 + 3x - 18)
what 2 numbers add to 3 and multiply to - 18?
-3 and 6
therefore 4x2 + 12x − 72 = 4(x-3)(x+6)
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