Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
-$\sqrt { - 220 }$
A) $- 2 \sqrt { 55 } \mathrm { i }$
B) $2 \sqrt { 55 } \mathrm { i }$
C) $2 \sqrt { 55 }$
D) $- 2 \sqrt { 55 }$

Question

Quizplus · Accepted Answer

The square root of a negative number involves the imaginary unit $i$, where $i = \sqrt{-1}$. Thus, $\sqrt{-220} = \sqrt{220} \cdot \sqrt{-1} = \sqrt{4 \cdot 55} \cdot i = 2\sqrt{55}i$.

Write the Word or Phrase That Best Completes Each Statement −220\sqrt { - 220 }−220​

Write the Word or Phrase That Best Completes Each Statement $\sqrt { - 220 }$