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.
(-5*10^6-sqrt(5*10^12-4*10^8))/2
(-5*10^6-sqrt(5*10^12-4*10^8))/2
Natural Language
Math Input
Extended Keyboard
