The sum of the coefficient in the expansion of `(1+ax-2x^(2))^(n)` is

If the sum of the coefficients in the expansion of (1 -3x + 10x^2)^(n) is a and the sum of the coefficients in the expansion of (1 - x^(2))^(n) is b , then

If the sum of the coefficients in the expansion of (1-4x+7x^(2))^(n) is "a" and the sum of the coefficients of (1+x+2x^(2))^(n) is "b" ,then find relation between a and b

The sum of the coefficient in the expansion of (1 + x+x^2)^n is

The sum of the coefficient in the expansion of (1 + x+x^2)^n is

The sum of the coefficients in the expansion of (1-2x+2x^2)^(2014) is

The sum of the coefficients in the expansion of (1+2x-x^2)^(20) is