The domain is all of the 'x' values which are allowed in the expression....
In this example, you cannot have a zero denominator so x = -8 would not be allowed
can you see another 'x' that is not allowed? (which would result in a zero denominator?)
-2 as well, are there any more?
Just considering REAL numbers for the domain of the fxn.
so -8 and -2 would be excluded from all 'x'