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.
(x^3 + x)/(x^3 + x^2 + x) /. x -> x - 1 // Simplify
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
