E
Editor
Sep 18, 2022
What is domain of the function $g(x)=\sqrt{x^{2}-4}$=
Difficulty: Easy
A:
R
B:
$Z^{-}$
C:
$[0, \infty)$
D:
$(- \infty, -2)U[2, \infty)$
ID: 63273db8ca83163ac3a1048b