#1**0 **

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

That's too much multiplication to try to do it manually.

So, I used a handy tool that has been put at our disposal,

i.e, **https://www.symbolab.com/solver/expand-calculator**

I found that the coefficient is **375**. Go to there and see for yourself.

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Bosco Jun 20, 2023