Math Help - binomial expansion

1. binomial expansion

find the term independent of x on the expansion of (x^2+1/x)^9

2. Originally Posted by outlaw
find the term independent of x on the expansion of (x^2+1/x)^9
Use binomial theorem:

${9 \choose 3} \cdot (x^2)^3 \cdot (x^{-1})^6=84$