Question

The co-efficient of yx^2 in the expansion of (x^2+ 5y) (x^2 -8y ) is​

Answer 1

Answer:

Coefficient of x8y5 is 1287. Explanation: We know (a+b)n=nC0an⋅b0+nC1an−1⋅b1+nC2an−2⋅b2+..+nCnan−n⋅bn. Here a=x,b=y,n=13

Step-by-step explanation:

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