plot x^3+3 x^2 y+3 x y^2+y^3-x^2+y^2=0 for x=-4..4, y=-4..4

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.