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.
[x*y*(y-4)*(x-8)=0,(x-4)^2=4^2-(y-4)^2,(x-11)^2=3^2-(y-4)^2]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random