00:01
All right, so we want to write the square root of 72 in the simplest form.
00:06
So what we are essentially doing is we want to see if there are any factors of 72 that are perfect squares.
00:15
So what we can do is we can start a little factor tree.
00:19
So we'll start with 2, and 72 divided by 2 is 36.
00:26
Now, we can keep going with the factor tree, but we kind of don't need to because, look, 36 is a perfect square.
00:35
So we can rewrite the square root of 72 as the square root of 36 times 2.
00:44
And when we have multiplication under the square root, we can break it up and say the square root of 36 times the square root of 2.
00:53
Well, the square root of 36 is 6, so we rewrite that as 6, and then times the square root of 2, and that's in the simplest form...