Find the sum of the coefficients of all the integral powers of `x` in the expansion of `(1+2sqrt(x))^(40)dot`

The sum of the co-efficients of all the even powers of x in the expansion of (2x^(2)-3x+1)^(11) is -

What is the sum of the coefficients of all the terms in the expansion of (45x-49)^(4) ?

The sum of coefficients of integral powers of x in the binomial expansion of (1-2sqrt(x))^(50) is: (1) (1)/(2)(3^(50)+1)(2)(1)/(2)(3^(50))(3)(1)/(2)(3^(50)-1)(4)(1)/(2)(2^(50)+1)

The sum of the coefficients of even powers of x in the expansion (1-x+x^(2)-x^(3))^(5) is

Find the sum of the coefficient of to middle terms in the binomial expansion of (1+x)^(2n-1)

The sum of the coefficients of odd powers of x in the expansion (1+x+x^(2)+x^(3))^(5)