00:01
So 4x minus 1 to the 4th is 4x minus 1 times 4x minus 1 times 4x minus 1 times 4x minus 1 times 4x minus 1.
00:12
Let's do the first two binomials here.
00:15
You'll notice it's a binomial squared really.
00:17
So we take the first term, square it.
00:19
4x times 4x is 16x squared.
00:23
Multiply 4x times a minus 1, which you get a minus 4x and double it.
00:27
So minus 8x.
00:29
And then square the second term, the minus 1 times minus 1.
00:31
Is plus one.
00:33
And you'll notice that this is the same thing over here.
00:35
So we'll just kind of repeat that with the 16x squared minus 8x plus one.
00:42
Now let's go ahead and just multiply these together.
00:45
So let's take 16x squared and multiply it by 16x squared...