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.
(-2z^4-4z^3-3z^2-2z-1)/(2z^2-1)
(-2z^4-4z^3-3z^2-2z-1)/(2z^2-1)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
