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.
-3*7^x+2*6^x+2*5^x-2*4^x+3^x from x=-1 to 0
-3*7^x+2*6^x+2*5^x-2*4^x+3^x from x=-1 to 0
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random