Question

the coefficient of x³ in (2x-3/x²)⁹​

Answer 1

Answer:

0 is the answer to this question.

Answer 2

Answer:

The general term is 

tr=9Cr.(−1)9−r.(2x)r.(x23)9−r

If the power of x in above general term should be 3, we have,

r−2(9−r)=3    which gives r=7.

Putting this value of r in the general term expression, we get the coefficient of x3