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.
Sum[Binomial[3,k]^2,{k, 0, 3}]*4 +4*9^2
Sum[Binomial[3,k]^2,{k, 0, 3}]*4 +4*9^2
Natural Language
Math Input
Extended Keyboard
