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.
RowReduce[{{2,-1,-1,2},{4,3,-2,-1},{1,4,1,4}}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random