Factor completely x3 + 3x2 − 4x − 12.

a) (x + 2)(x − 2)(x + 3)
b) (x + 2)(x − 2)(x + 3)(x − 3)
c) (x2 + 4)(x + 3)
d) (x2 − 4)(x + 3)



Answer :

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