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/(1+2bc)+b^2/(1+2ac)+c^2/(1+2ab)-3/5,a=1/sqrt2,b=c=1/2
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random