00:01
Okay, so we're going to be looking at the factors that we're given to us to see if they are factors of our equation, f -of -x.
00:09
And to do that, we're going to set up our synthetic division problem.
00:13
So we'll start with x plus 4, and we've got a negative x cubed.
00:21
We're going to need to put in a zero for a placeholder for our x squared, since we do not have that term.
00:26
So now we're going to take a look and see what we need to get negative x cubed.
00:33
So if we multiply negative x squared times our x, that will be negative x cubed minus a 4x squared.
00:41
Go ahead and subtract that.
00:43
We'll give us a positive 4x squared plus 13x minus 12.
00:49
So now take a look at 4x squared.
00:53
And we need 4x times x.
00:57
We'll give us that 4x squared plus 16x.
01:03
Go ahead and subtract gives us negative 3x minus 12.
01:10
So we will go ahead and take a look.
01:13
So now we need a negative 3.
01:16
So negative 3 times x is negative 3x...