Answer:
(-∞, ∞)
Step-by-step explanation:
To find the domain, we find how far along the x axis the line goes.
Specifically, we're looking for when x doesn't exist, because that's much easier.
So we're looking for when x is undefined. In order to have something undefined, you need the [tex]\sqrt{-something}[/tex], or [tex]\frac{anything}{0}[/tex].
As we can see, there's no part where x is undefined. Therefore, the domain is
(-∞, ∞)
