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21 February, 21:44

Which of the following is equivalent to √-80?

A. - 4i√5

B. 16i√5

C. 4i√5

D. 2i√5

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Answers (2)
  1. 21 February, 22:56
    0
    Hello there.

    Which of the following is equivalent to √-80?

    C. 4i√5
  2. 22 February, 01:16
    0
    80 = 16 * 5

    sqrt 16 = 4

    sqrt-1 = i

    so the correct answer is

    4i sqrt5

    C
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