what is (4a+2b)(a-b) equal??

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Guest Apr 13, 2016

Guest · Answer 1 · 2016-04-13T05:29:34

Expand the following:
(4 a+2 b) (a-b)

(4 a+2 b) (a-b) = (4 a) (a) + (4 a) (-b) + (2 b) (a) + (2 b) (-b):
4 a a-4 a b+2 b a-2 b b

4 a a = 4 a^2:
4 a^2-4 a b+2 b a-2 b b

2 b (-b) = -2 b^2:
Answer: | 4a^2 - 4ab + 2ba + -2b^2

Guest · Answer 2 · 2016-04-13T06:24:16

\(4a^2 - 2b^2 - 2ab\)

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