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.
a^2 = 9b 10c 11d, b^2 = 9c 10d 11a, c^2 = 9d 10a 11b, d^2 = 9a 10b 11c
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random