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.
6 x^5+6 x^4-4 x^2+4 x-(4 x^5+2 x^4+2 x^3+4 x)
6 x^5+6 x^4-4 x^2+4 x-(4 x^5+2 x^4+2 x^3+4 x)
Natural Language
Math Input
Extended Keyboard