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.
(-(1/2)*n^3+7*n^2+n-2)(1+(n-5)*(n-4)*(n-3)*(n-2)*(n-1)(1+n+n^2+n^3+n^4))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random