Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(10(u^10+u^5-2)-21(u^8-u))/(u-1)
(10(u^10+u^5-2)-21(u^8-u))/(u-1)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
