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.
(3/4 + sqrt(9/16 - 8/729))^(1/3) + (3/4 - sqrt(9/16 - 8/729))^(1/3)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random