Find the sum of coefficients in `(1+x-3x^2)^(4163)dot`

Find the sum of the coefficients in (x + y)^(8)

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 coefficients in (1+x+3x^2)^2143 is (A) 2^2143 (B) 0 (C) 1 (D) -1

Sum of the coefficients of (1-x)^(25) is:

Find the coefficient of x^(9) in (1+3x+3x^(2)+x^(3))^(15)

Find the coefficient of x^(6) in (1+3x+3x^(2)+x^(3))^(15)

Find the sum of the coefficients in the expansion of (1+2x+3x^(2)+...nx^(n))^(2)

In the expansion of (1-x^2)(1+x)(1+3/x+3/x^2+1/x^3)^5 the sum of the coefficient of x^3 and x^(-13) is

if the sum of coefficients in the expansion of (x-2y+3z)^(n) is 128 ,then find the greatest coefficients in the expansion of (1+x)^(n)