Coefficient

Question

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Find the coefficient of y^4 in the expansion of (2y-5+3y^2)^6.

learnmgcat Aug 8, 2024

NotThatSmart · Answer 1 · 2024-08-08T11:51:37

Here's the entire expansion (I have no life)

$729y^{12}+2916y^{11}-2430y^{10}-19980y^{9}+135y^{8}+59976y^{7}+6364y^{6}-99960y^{5}+375y^{4}+92500y^{3}-18750y^{2}-37500y+15625$

The answer is 375

Thanks! :)