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.
((52-12*a)^2+(3a^2-9a+18)^2+(a^2-9a-18)^2)/(a^2+18)^2
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random