vane568 vane568

20-02-2015
Mathematics

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use the binomial theorem to expand (2x+1)^3

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Panoyin Panoyin

20-02-2015

(2x + 1)³
(2x + 1)(2x + 1)(2x + 1)
(4x² + 2x + 2x + 1)(2x + 1)
(4x² + 4x + 1)(2x + 1)
(8x³ + 4x² + 8x² + 4x + 2x + 1)
8x³ + 12x² + 6x + 1

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