Find the domain of f(x)=17-x^2

$$f(x)=17-x^2$$

The domain is all the possible values of x (they must have a corresponding f(x) value)

Any positive x will work

Any negative x will work

x=0 works

so domain is All real x        

Domain:     $$\{x:x\in Z\}$$   

I'm am not sure about set notation but I think this is how you write x is in the set ot real numbers.  

check the forum while you wait by using the search box at the top. I know there is lots on this (unless removed in the site overhaul.)