Find the first 4 terms in the expansion of
((3x^4)-(2/y^5))^9
you can verify your work at
http://www.wolframalpha.com/input/?i=%28%283x^4%29-%282%2Fy^5%29%29^9
((3x^4)-(2/y^5))^9
http://www.wolframalpha.com/input/?i=%28%283x^4%29-%282%2Fy^5%29%29^9