SOLUTION: Factor by grouping. 6x^3 + 7x^2 - 24x - 28

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Question 404498: Factor by grouping.
6x^3 + 7x^2 - 24x - 28
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
6x^3 + 7x^2 - 24x - 28
reordering:
6x^3 - 24x + 7x^2 - 28
group:
(6x^3 - 24x) + (7x^2 - 28)
6x(x^2 - 4) + 7(x^2 - 4)
(x^2 - 4)(6x + 7)
left term is "difference of squares":
(x^2 - 2^2)(6x + 7)
(x-2)(x+2)(6x + 7)