00:02
We're going to expand c plus d to the fifth using the binomial theorem, and the binomial theorem involves a lot of patterns.
00:10
One of those patterns is that the coefficients on each term will come from the numbers in row five of pascal's triangle when you're expanding something to the fifth.
00:18
So let's put those coefficients in place.
00:21
One, five, ten, ten, five, and one.
00:27
Next, the powers on c are going to descend, so we'll start with c to the fifth.
00:31
Then we have c to the fourth, c to the third, c to the second, c to the first, and c to the zero on the last term...