Question

Factor by grouping. a2 + 2ab – 24b^2

Answer 1

(a -4b)(a +6b)

Explanation:

You need to rewrite the middle term to do that.

... = a^2 +6ab -4ab -24b^2

... = a(a +6b) - 4b(a +6b) . . . . . factor pairs of terms

... = (a -4b)(a +6b)