The term independent of x in the expansion of `(1+x)^n (1-1/x)^n` is

The value of the term independent of x in the expansion of (x^(2)-(1)/(x))^(9) is :

Coefficient of the term independent of x in the expansion of (1+x)^(2n)(x/(1-x))^(-2n) is:

Prove that the term independent of x in the expansion of (x+(1)/(x))^(2n) is (1.3.5....(2n-1))/(n!)*2^(n)

The term independent of x in the expansion of (1+2x+(2)/(x))^(3) is

Show that the term independent of x in the expansion of (x-1/x)^(10) is -252 .