The coefficient of x75in the expansion of 1-x240 x2-2-1x2-5 is -

x^2+2+1x^2=(x+1x)^2 x^40(x+1x)^40(x+1x)^ 5 x^40(x+1x)^40 5 x^40(x+1x)^35 x^5(x^2+1)^35 35c_o= 1 ...

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Binomial Theorem

The coefficie...

Question

The coefficient of $x^{75}$ in the expansion of $(1 + x^{2})^{40}$ $(x^{2} + 2 + \frac{1}{x^{2}})^{- 5}$ is :

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