00:01
For this question, i want to find and simplify the difference quotient for the given function.
00:06
So what i'm basically going to do first, the first part says everywhere i see an x and i'm going to substitute x plus h.
00:13
So i'm already down here.
00:15
I have negative 2.
00:16
Then i have an x.
00:17
So i'm going to put x plus h in this place.
00:20
Minus.
00:21
Now i have another x.
00:22
I'm going to put x plus h plus 4.
00:25
So that's the first part.
00:27
The next part says subtract my original function.
00:29
So i'm going to put parentheses.
00:30
So i remember to distribute out that negative.
00:34
That's that part, and now i'm going to divide everything by h.
00:41
And now i need to simplify.
00:43
So here we go.
00:44
So i'm going to foil this out first.
00:46
So negative 2, it'll be x squared plus 2x, h plus h squared.
00:54
Now i distribute out that negative, so it'll be negative x minus h plus 4...