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.
Expand[((Sum[x^i,{i,0,12}])^3)*(Sum[x^i,{i,0,7}])(Sum[x^i,{i,0,5}])]
Expand[((Sum[x^i,{i,0,12}])^3)*(Sum[x^i,{i,0,7}])(Sum[x^i,{i,0,5}])]
Natural Language
Math Input
Extended Keyboard
