Perform Operations with Square Roots of Negative Numbers
Perform the indicated operations and write the result in standard form.
-$$\sqrt { - 16 } + \sqrt { - 64 }$$
A) $12 \mathrm { i }$
B) $- 12 \mathrm { i }$
C) $32 \mathrm { i }$
D) $- 12$

Question

Quizplus · Accepted Answer

The square root of a negative number can be expressed using the imaginary unit $i$, where $i = \sqrt{-1}$. Thus, $\sqrt{-16} = 4i$ and $\sqrt{-64} = 8i$. Adding these together gives $4i + 8i = 12i$.

Perform Operations with Square Roots of Negative Numbers Perform the Indicated

Perform Operations with Square Roots of Negative Numbers
Perform the Indicated