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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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\((2y-7)^5=32y^5\ {\color{blue}-560}\ y^4+3920y^3-13720y^2+24010y-16807\)

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 Aug 6, 2021

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