00:01
So the first thing we're going to do is identify our x intercepts, which are going to be positive 7, negative 3.
00:06
And we can graph those on our number line.
00:11
Now we need to find the regions, to find or look at each of these three regions we just created, and determine whether or not the numbers in there are positive or negative.
00:20
So first, we'll pick a number that lies to the left of negative 3.
00:25
We'll use negative 5.
00:27
So i'm looking to plug into our original equation.
00:30
We have negative 5 minus 7 is going to be more negative.
00:34
It'll still be a negative number.
00:36
And then negative 5 plus 3 is still going to be a negative number as well.
00:40
So we're multiplying two negatives, which is going to give us a positive.
00:45
So numbers in this region will be positive.
00:47
Now, looking at the middle, we'll plug in 0...