Question 388954
what is the natural domain of 
f(x)=x^2-25
Domain: All Real Numbers 
-------------------
g(x)= [sqrt(x-2)/sqrt(x^2-25)]
Domain: 
x^2-25 must be positive
Solve:
(x+5)(x-5) > 0
Solution: Domain is x< -5 OR x> +5
=====================================
Cheers,
Stan H.
------------