00:01
In this problem, we're being asked a factor the given polynomial.
00:04
Well, whenever you're asked a factor, you should always look for a greatest common factor first, which in this case, there is none.
00:10
Well, this is a binomial, and it looks like both of our terms are perfect squares, and they're getting subtracted.
00:15
So this is simply just a difference of squares problem.
00:18
So when we factor, we're going to get a binomial times a binomial.
00:22
To get the first term in both, we take the square root of a to the four, which is a squared.
00:26
So they'll both start with a square.
00:28
To get the second term in both, we take the square with the 16, which is 4...