[" Coefficient of "x^(n-1)" in the expansion of,"(x+3)^(n)+(x+3)^(n-1)(x+2)+(x+3)^(n-2)(x)],[+(x+2)^(n)" is: "]

Coefficient of x^(n-1) in the expansion of.(x+3)^(n)+(x+3)^(n-1)(x+2)+(x+3)^(n-2)(x+2)^(2)+.........+(x+2)^(n) is :

The coefficient of x^(n) in the expansion of (2+3x)(e^(-3x)) is

The coefficient of x^n in the expansion (2x+3)^n-(2x+3)^(n-1)(5-2x)+(2x+3)^(n-2)(5-2x)^2+…..

What is the coefficient of x^(n-2) in the expansion of (1+x)^(2n) ?

Coefficient of x^(n) in the expansion of (1-2x+3x^(2)-4x^(3)+...oo)^(2) is

The coefficient of x^(n) in the expansion of ((1+x)^(2))/((1 - x)^(3)) , is

The coefficient of x^(n) in the expansion of ((1+x)^(2))/((1 - x)^(3)) , is