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.
1166400k^2-4*(6400-481k)*(256k^2-7696k)=0
1166400k^2-4*(6400-481k)*(256k^2-7696k)=0
Natural Language
Math Input
Extended Keyboard