Coefficient of `x^(11)` in the expansion of `(1+x^2)(1+x^3)^7(1+x^4)^(12)` is 1051 b. 1106 c. 1113 d. 1120

Coefficient of x^(11) in the expansion of (1+x^(2))^(4)(1+x^(3))^(7)(1+x^(4))^(12) is 1051b.1106 c.1113d.1120

The coefficient of x^(4) in the expansion of (1-x)^(-2) is

Coefficient of x^(4) in the expansion of (1)/((x+1)(x+2)) is

The coefficient of x^(5) in the expansion of (1+x^(2))(1+x)^(4) is

The coefficient of x^(7) in the expansion of (1+x)^(9) is

The coefficient of x^(3) in the expansion of (1+2x)^(6)(1-x)^(7) is

The coefficient of x^(4) in the expansion of (1-x-2x^(2))^(8) is

Find the coefficient of x^(4) in the expansion of (1+x+x^(2)+x^(3))^(11)

Find the coefficient of x^(4) in the expansion of (1+x+x^(2)+x^(3))^(11)