00:01
For problem number five, it's exactly like problem number four and one through four.
00:05
So we're asked to find the values that have to be excluded from our domain.
00:12
So we have x minus 1 over x squared plus 11x plus 10.
00:22
So in this case, again, all we care about is our denominator, and that our denominator is not going to give us 0.
00:29
Zero in a fraction is, of course, undefined, so we do not want that in our function.
00:32
So we would just set x squared plus 11x plus 10 equal to 0.
00:39
Now we are going to have to factor this.
00:42
So if you do not remember just a quick review of how to factor, an easy way to do that, would be put your multiplication number here and your addition number in the bottom.
00:54
Now we're trying to find two numbers that when multiplied give us 10 and add together, give us 11...