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.
(3a4 – 2a2 + 5a – 10) – (2a4 + 4a2 + 5a – 2).
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random