If the binomial expansion of `(a +b x)^-2` is `1/4-3x+.......,` then `(a, b) =`

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

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

The sum of the coefficients in the binomial expansion of (1/x +2x)^6 is equal to :

In the binomial expansion (a+bx)^(-3) = ( 1)/( 8 ) + (9)/( 8)x +"…….." , then the value of a and b are :

The sum of the coefficients in the binomial expansion of (1/x + 2x)^(6) is equal to

For beta ne 0 , if the coefficient of x^(3) in the binomial expansion of (1 + betax)^(6) and the coefficient of x^(4) in the binomial expansion of (1 - betax)^(8) are equal, then the value of beta is

The numerically greatest term in the binomial expansion of (2a-3b)^(19) when a=(1)/(4) and b=(2)/(3) is

The sum of the coefficient in the binomial expansion of ((1)/(x) + 2x) ^(6) is equal to

The fourth term in the binomial expansion of (x^2 - (1)/(x^3) )^n is independent of x , when n is equal to

The number of real negative terms in the binomial expansion of (1+i x)^(4n-2),n in N ,x >0 is n b. n+1 c. n-1 d. 2n