00:01
For this problem, we're given a rectangle.
00:04
And this rectangle is said, its areas to be said to equal x squared plus 2x.
00:17
And as i'm sure that many of you know, area of a rectangle or a square is equal to length, its length times its width.
00:29
So to fix that.
00:33
Okay.
00:34
So next, we can substitute x.
00:36
Plus 2x and we can plug it into this equation.
00:39
So let's rewrite it, excuse me, length times width equals x squared plus 2x, which is the area.
00:57
So next we should ask ourselves, what times what equals x squared plus 2x? and so let's make it easier for ourselves.
01:07
As you can see, in x squared plus 2x, what is the greatest common factor? this expression on this side, just on this side of the equation...