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.
D=(2a+2)^2-4(a-1)(a-2) solve for D
D=(2a+2)^2-4(a-1)(a-2) solve for D
Natural Language
Math Input
Extended Keyboard
