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Find the coefficient of y^4 in the expansion of (2y-7)^5.

 Aug 5, 2021
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Find the coefficient of y^4 in the expansion of (2y-7)^5.

 

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(2y7)5=32y5 560 y4+3920y313720y2+24010y16807

laugh  !

 Aug 6, 2021

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