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.
(-5 a3)•(2b2-3b2)-(2a3-4a3)•(3b2)=
(-5 a3)•(2b2-3b2)-(2a3-4a3)•(3b2)=
Natural Language
Math Input
Extended Keyboard