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.
resultant(a^3 + 2 a^2 + a + 1, a^5 + 2 a^4 - 2 - a b, a)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random