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Find the coefficient of y^4 in the expansion of (2y - 5 + y - 6)^4.

 Apr 20, 2024
 #1
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The coefficient of y4 in the expansion will be 81.   

 

Combine terms of (2y – 5 + y – 6)4  to  (3y – 11)4   

 

There will be only one term raised to the fourth power   

and that's the "3y" term ...  3 raised to the fourth is 81.   

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 Apr 21, 2024

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