The coefficient of `x^n` in the expansion of `(1-x)(1-x)^n` is `n-1` b. `(-1)^n(1-n)` c. `(-1)^(n-1)(n-1)^2` d. `(-1)^(n-1)n`

The coefficient of x^n in expansion of (1+x) (1-x)^n is

The coefficient of x^(n) in expansion of (1 + x)(1 - x)^(n) is

Coefficient of x^(n) in the expansion of ((1+x)^(n))/(1-x)

Coefficient of x^(n) in the expansion of ((1+x)^(n))/(1-x)

Find the coefficient of x^(n) in the expansion of (1+x)(1+x)^(n).

The coefficient of x^n in the expansion of (1+x)^(2n) and (1+x)^(2n-1) are in the ratio.

The coefficient of x^(n) in the expansion of (1+1/(1!)x+1/(2!)x^(2)…+1/(n!)x^(n))^(2)

The coefficient of 1//x in the expansion of (1+x)^n(1+1//x)^n is (n !)/((n-1)!(n+1)!) b. ((2n)!)/((n-1)!(n+1)!) c. ((2n)!)/((2n-1)!(2n+1)!) d. none of these