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.
(2-4)^2 - (-4)^3 = (-2)^2 - (-4)^3 = 4 - (-64) = 4 + 64 = 68
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random