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 and x^(2) are 3 and -6 respective 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,then m is:

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 f (1+x)^m(1-x)^n, the coefficient of x 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 coefficient of x and x ^(2) are 3 and (-6) respectively, then the value of n 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