Multiply and simplify. (a - 2b) (2a - b) (a + 2b)

asked Sep 13, 2015 150k views

4 votes

Multiply and simplify.
(a - 2b) (2a - b) (a + 2b)

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5 votes

$(a - 2b) (2a - b) (a + 2b)=\\ (2a-b)(a^2-4b^2)=\\ 2a^3-8ab^2-a^2b+4b^3=\\ 2a^3-a^2b-8ab^2+4b^3$

Julien Mazars answered Sep 18, 2015

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