Evaluate the radical expression if it is a real number. Use a calculator to approximate irrational numbers to the nearest
hundredth. If the expression is not a real number, so state.
-$\sqrt { - 16 }$
A)4
B)256
C)-4
D)not a real number

Question

Quizplus · Accepted Answer

The square root of a negative number is not a real number; therefore, $\sqrt{-16}$ is not a real number.

Evaluate the Radical Expression If It Is a Real Number −16\sqrt { - 16 }−16​

Evaluate the Radical Expression If It Is a Real Number $\sqrt { - 16 }$