The coeffiicent of `x^(n)` in the binomial expansion of `( 1-x)^(-2)` is

Find the binomial expansion of (1+x)^(-2)

Prove that the coefficient of x^(n) in the binomial expansion of (1+x)^(2n) is twice the coefficient of x^(n) in the binomial expansion of (1+x)^(2n-1) .

Binomial expansion of (x+1)^(6)

Coefficient of x^(2) in binomial expansion of (1-x)^(2) is

Coefficient of x^(2) in binomial expansion of (1-x)^(2) is

If the coefficients of x, x^2 and x^3 in the binomial expansion of (1+x)^(2n) are in A.P., prove that 2n^2-9n+7=0 .

if the coefficients of x,x^2 and x^3 in the binomial expansion (1+x)^(2n) are in arithmetic progression then prove that 2n^2-9n+7=0