If in the expansion f ${(1+x)}^m{(1-x)}^n,thecoefficientofx\text{and}$x^2 are 3 and -6 respectively then (A) m=9 (B) n=12 (C) m=12 (D) n=9

if in the expansion of ${(1+x)}^m{(1-x)}^n$ the cofficients of x and$x^2$ are 3 and -6 respectively then m is

If in the expansion of ${(1+x)}^m{(1-x)}^n$, the coefficients of $x\text{and}{x}^2$ are 3 and -6 respectively, then m is:

If in the expansion of ${(1+x)}^m{(1-x)}^n$ , the coefficients
of x and $x^2$ are 3 and - 6 respectively, the value of m and n are

If in the expansion of ${(1+x)}^m{(1-x)}^n$ , the coefficients
of x and $x^2$ are 3 and - 6 respectively, the value of m and n are

If in the expansion of ${(1+x)}^m{(1-x)}^n$ the coefficients of x and x^2 and 3 and -6 respectivly then m is (A) 6 (B) 9 (C) 12 (D) 24

If in the expansion of ${(1+x)}^m{(1-x)}^n$ , the coefficients
of x and $x^2$ are 3 and - 6 respectively, the value of m and n are

In in the expansion of ${(1+px)}^q$, $q$ belongs to $N$, the coefficients of $x$ and $x^2$ are $12$ and $60$ respectively then $p$ and $q$ are

In the expansion of ${[(1+x)/(1-x)]}^2,$ the coefficient of $x^n$ will be $4n$ b. $4n-3$ c. $4n+1$ d. none of these

If A and B are the coefficients of $x^n$ in the expansion ${(1+x)}^{2n}$ and ${(1+x)}^{2n-1}$ respectively, then

Let the coefficient of $x^n$ in the expansion of ${(1+x)}^{2n}$ be P and the coefficient of $x^n$ in the expansion of ${(1+x)}^{2n-1}$ be $q$, then