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2x 12

December 5th, 2008

2x 12
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2x 12
What is the coefficient of x^5y^12 in the expansion of (2x-1y)^17?

What is the coefficient of x^5y^12 in the expansion of (2x-1y)^17

17C5 * 2^5 * (-1)^12
6188 * 32 * 1
198016

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