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^5+4x^4+12x^3+16x^2+16x
x^5+4x^4+12x^3+16x^2+16x
Natural Language
Math Input
Extended Keyboard
