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.
0=2x^4-7x^3+3x^2+8x-4
0=2x^4-7x^3+3x^2+8x-4
Natural Language
Math Input
Extended Keyboard