Question

What is the square root of –16? A. –8i B. –4i C. 4i D. 8i

Answer 1

Answer:

C. 4i

Step-by-step explanation:

$\sqrt{-16} = \sqrt{16} \sqrt{-1}$ (because $\sqrt{ab} =\sqrt{a} \sqrt{b}$)

Since $\sqrt{16}$=4, and $\sqrt{-1}$=i, $\sqrt{-16}$=4i

Answer 2

Answer:

C. 4i

Step-by-step explanation: