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  4. What is the sum of the coefficients of the polynomial after expansion of (25-60 x+22 x2+18 x3-6 x8)2013 ?

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Q. What is the sum of the coefficients of the polynomial after expansion of $\left(25-60 x+22 x^2+18 x^3-6 x^8\right)^{2013}$ ?

Binomial Theorem

Solution:

Put $x=1 \Rightarrow$ Sum $=25-60+22+18-6=-1$.