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find the coefficient of x^3 in the expansion (4x-1)^6

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find the coefficient of x^3 in the expansion...

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binomial expansion

asked May 28, 2013 in Algebra 2 Answers by anonymous

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1 Answer

The binomial coefficients for n=6 are 1 6 15 20 15 6 1. The term containing x^3 has the coefficient 20. This needs to be multiplied by 4^3=64 making 1280.

answered Mar 28, 2015 by Rod Top Rated User (1.1m points)

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