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.
4x*e^(5x^4+8x)+2x^2*e^(5x^4+8x)*(20x3+8) solve for x=-0.68
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random