Home
Class 11
MATHS
If the coefficient of x^2 and x^3 in the...

If the coefficient of `x^2` and `x^3` in the expansion of `(3 + kx)^9` are equal, find k.

Text Solution

Verified by Experts

The correct Answer is:
`9/7`
Promotional Banner

Similar Questions

Explore conceptually related problems

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

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

Find the coefficient of x^6 in the expansion of (3x^2 - 1/ (3x))^9

Find the coefficient of x^-3 in the expansion of (x -1/(2x))^5

Find the coefficient of x^9 in the expansion of (1/x + x^2)^18

Find the coefficient of x^-20 in the expansion of (x^3 - 1/(2x^2))^15 .