Respostas

2014-03-06T00:33:52-03:00
(4a-b)³ = 64a³-3.16a².b+3.4a.b²-b³ = 64a³ - 48a²b + 12ab² - b³

(4a+b)³ = 64a³ + 48a²b + 12ab² + b³

(4a-b)³ - (4a+b)³ = -96a²b - 2b³
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