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 (1-t)^3 P_0 + 3 (1-t)^2 t P_1 + 3 (1-t) t^2 P_2 + t^3 P_3
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random