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.
solve 3.1*7^2-4.6*7 = 38.8 * 7 +b
solve 3.1*7^2-4.6*7 = 38.8 * 7 +b
Natural Language
Math Input
Extended Keyboard
