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^2+y^2+z^2=1, (x-2)^2+(y-1)^2+z^2=4
x^2+y^2+z^2=1, (x-2)^2+(y-1)^2+z^2=4
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
