If A denotes the sum of all the coefficients in the expansion of (1-3x+10x^2)^n and B denotes the sum of all the coefficients in the expansion of (1+x^2)^n, then :

Question

Accepted Answer

Correct answer: A. (a) Sum of coefficients in the expansion of (1-3x+10x^2)^n=A then A= (1-3+10 )^n=8^n ( put x=1 ) and sum of coefficients in the expansion of (1+x^2)^n=B thenB= (1+1 )^n=2^nA=B^3

$If A denotes the sum of all the coefficients in the expansion of (1 - 3 x + 10 x^{2})^{n} and B denotes the sum of all the coefficients in the expansion of (1 + x^{2})^{n}, then :$

Solution

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