Find the Domain $$f ( x ) = x ^ { 2 } - 5$$

Multiple Choice

Find the domain.
- $$f ( x ) = x ^ { 2 } - 5$$

A) $\{ x \mid x$ is a real number and $x \neq \}$
B) $\{ x \mid x$ is a real number and $x \neq \sqrt { - 5 } \}$
C) $\{ x \mid x$ is a real number and $x z - 5 \}$
D) All real numbers