In the expansion of `(1+3x+2x^2)^6` , the coefficient of `x^(11)` is
a. 144
b. 288
c. 216
d. 576

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:

The sum of the binomial coefficients in the expansion of (x^2+1/x)^n is 1024. find the coefficient of x^11 in the binomial expansion.

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

In the expansion of (x^2+2x+2)^n, nepsilonN (A) coefficient of x=n.2^n (B) coefficient of x^2=n^2.2^(n-1) (C) coefficient of x^3=n^22^(n-2) (D) none of these

Find the coefficient of x^(7) in the expansion of (ax^(2) + (1)/(bx))^(11) . (ii) the coefficient of x^(-7) in the expansion of (ax + (1)/(bx^2))^(11) . Also , find the relation between a and b , so that these coefficients are equal .