00:01
We're being asked to perform to given operations.
00:03
Well, if you notice in this problem, we're given three different polynomials.
00:06
So what we can do first is just concentrate on the first two polynomials.
00:10
So i'm going to put a set of brackets around them.
00:13
Well, we're being asked to add the two polynomials.
00:16
So using the commutative and associative properties, we can regroup our terms so that way we can have our like terms together.
00:23
So let's start with the first term.
00:25
We have negative 3 z squared, and its late term would be 2z squared.
00:30
So i'm going to bring down my brackets, and i'm going to group those two terms together.
00:35
So we'll have negative 3 z squared plus 2z squared.
00:42
Well, our next term is negative 4z.
00:45
Well, it's like term is positive 2z.
00:47
So we can group those terms together as well.
00:49
So we'll have plus the quantity of negative 4z plus 2z.
00:58
Now our next term is positive 7.
01:00
Well, its like term is negative 1.
01:02
So we can group those together as well.
01:05
So we'll have plus the quantity of 7 minus 1.
01:09
That's a 7 there.
01:11
And then i'll put my bracket in.
01:13
And all i'm going to do is bring down my last polynomial for right now.
01:18
So we'll have minus the quantity of 2 z to the second minus 3z plus 7.
01:27
Now we can go ahead and combine those like terms.
01:29
Well, negative 3 z squared plus 2z squared.
01:33
Well, negative 3 plus 2 is negative 1.
01:35
So we'll have negative 1 z squared.
01:39
In our second set of preemphasies, we have negative 4 z plus 2 z...