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26 April, 08:55

Which complex number has a distance of √17 from the origin on the complex plane?

A; 2 + 15i

B:17 + i

C:20 - 3i

D:4 - i

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Answers (1)
  1. 26 April, 09:17
    0
    Let the complex number be x + iy

    Then by the pythagoras therem

    17 = x^2 + y^2

    D will satisfy this equation

    4^2 + (-1) ^2 = 17

    answer is D 4 - i
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