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.
plot (x+2y)^2/5 + (2x-y)^2/20 = 1
plot (x+2y)^2/5 + (2x-y)^2/20 = 1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
