Which interval represents the domain of f(x)=log7(x2−25)f(x) = \log_7(x^2 - 25)f(x)=log7(x2−25)?
(5,∞)(5, \infty)(5,∞)
(−∞,−5)∪(5,∞)(-\infty, -5) \cup (5, \infty)(−∞,−5)∪(5,∞)
(−5,5)(-5, 5)(−5,5)
[5,∞)[5, \infty)[5,∞)