Answers

2016-06-22T20:13:50+08:00
(2x+5)³= A³ + 3a²b + 3ab² +B³
            = (2x)³ + 3(2x²)(5) + 3(2x)(5²) + 5³
            = 8x³ + 30x² + 150x + 125
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