Find a if the coefficients of `x^2`and `x^3`in the expansion of `(3+a x)^9`are equal.

If the coefficients of x^2 and x^3 in the expansion of (3 + ax)^(9) are the same, find the value of a.

Find the coefficient of x^24 in the expansion of (x^2-3a/x)^15 .

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

If the coefficients of x^2a n d\ x^3 in the expansion of (3+a x)^9 are the same, then the value of a is a. -7/9 b. -9/7 c. 7/9 d. 9/7

If the coefficients of x^2a n d\ x^3 in the expansion o (3+a x)^9 are the same, then the value of a is -7/9 b. -9/7 c. 7/9 d. 9/7

If the coefficients of x^2a n d\ x^3 in the expansion o (3+a x)^9 are the same, then the value of a is -7/9 b. -9/7 c. 7/9 d. 9/7

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

Find the coefficient of x^6y^3 in the expansion of (x+2y)^9 .

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

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