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^2+2x-1=0, y =2((4x^3 -3x+1)+1)
4x^2+2x-1=0, y =2((4x^3 -3x+1)+1)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random