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.
NSolve[{2*x+y+z=20,x^2-2*y^2+z^2=2,x^2+y^2-2*z^2=-30}, {x, y,z}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
