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.
2(a−b)=29+4ab, 2(c−b)=11+bc, 2(c+a)=9-4ac
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
