00:01
So in part a of this problem, we're being asked to factor the given expression.
00:04
Well, remember, whenever you're asked to factor, the first thing you should do is factor out the greatest common factor.
00:10
Well, looking at these two terms, i know that both of these terms are divisible by y.
00:15
So we're going to factor out a y.
00:16
So now we have to go ahead and divide these terms by y.
00:20
Well, y squared divided by y is just y, and negative 4 y divided by y is negative 4.
00:26
Now, inside our parentheses, we have a binomial.
00:29
However, it's not the sum or difference of cubes or the difference of two squares, so we actually can't factor any further.
00:35
So now we have our final factored answer...