vane568
vane568
19-02-2015
Mathematics
Answered
use the binomial theorem to expand (2x+1)^3
Answer :
Panoyin
Panoyin
19-02-2015
(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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