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The coefficient of x^20 in the expansion of (1+x^2)^40(x^2+2+1/x^2)^-5

The coefficient of x^20 in the expansion of (1+x^2)^40(x^2+2+1/x^2)^-5

Grade:12th pass

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
5 years ago
is this x^2 is for whole in deno or only for 1 please reply

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