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.
simplify x%5E5-20x%5E4%2B163x%5E3-676x%5E2%2B1424x-1209
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
