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.
{{4,2,1},{6,3,0}}*({{5,8,6,-5},{1,0,3,0},{-2,2,1,0}}*{{6},{-4},{3},{1}})
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random