Find the coefficient of `x^5` in the expansion of ` (x+3)^9`

Find the coefficient of x^(5) in the expansion of (1+x^(2))^(5)*(1+x)^(4) is 60

Find the coefficient of x^(5) in the expansion of (1+x)^(21)+(1+x)^(22)+...+(1+x)^(30)

Find the coefficient of x^(15) in the expansion of (x - x^(2))^(10)

Find the coefficient of x in the expansion of (2x-(3)/(x))^(9)

Find the coefficient of (i) x^(5)" in the expansion of "(x+3)^(8) (ii) x^(6) " in the expansion of "(3x^(2) - a/(3x))^(9) (iii) x^(-15) " in the expansion of " (3x^(2) - a/(3x^(3)))^(10). (iv) a^(7)b^(5)" in the expansion of "(a-2b)^(12) .

Find the coefficient of x^5 in the expansion of ((2x)/3-3/(2x)) ^5

The coefficient of x^(5) in the expansion of (x +3)^(6) ,is

Find the coefficient of x^(5) in the expansion of ((2 + 3x + 4x^(2)))/(e^(x))

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