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Which of the following is equivalent to √-80? A. -4i√5 B. 16i√5 C. 4i√5 D. 2i√5

Which of the following is equivalent to √-80? A. -4i√5 B. 16i√5 C. 4i√5 D. 2i√5
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1 vote
Which of the following is equivalent to √-80?

A. -4i√5
B. 16i√5
C. 4i√5
D. 2i√5

User Vivek Verma
by
7.3k points

1 Answer

3 votes
80 = 16 * 5
sqrt 16 = 4
sqrt-1 = i
so the correct answer is
4i sqrt5

C


User Motoku
by
9.0k points
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User Umpirsky
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