Answer
sometimes
Work Step by Step
The even root of a negative radicand is NOT a real number, while the even root of a positive radicand is a real number. Hence, the given expression, $
\sqrt[]{-x}
,$ is SOMETIMES a real number.
If $x$ is a negative number, then the radicand, $-(x),$ is positive, which makes $\sqrt{-(x)}$ a real number. But if $x$ is positive, then $\sqrt{-x}$ is not a real number.
