Find the constant term in the expansion of `(x-1//x)^6dot`

Find the constant term in the expansion of (sqrt(x) -2/x^(2))^(20)

The constant term in the expansion of (x -2/x^(2))^(9) is

Find the 4^th term in the expansion of (x-2y)^12 .

If the constant term in the binomial expansion of (x^2-1/x)^n ,n in N is 15, then the value of n is equal to.

Find the 6th term in expansion of (2x^2-1//3x^2)^(10)dot

If x=1//3, find the greatest tem in the expansion of (1+4x)^8dot

Find the fourth term in the expansion of (1-2x)^(3//2)""dot

(i) Find the general term in the expansion of (3x^(2) - 1/(3x))^(9) . (ii) Find the term independent of x in the above expension.

Find the middle terms in the expansion of (x+y)^(7) .