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2 January, 20:34

Which of the following is a complex number?

A. - 7

B. 2 + square root of 3

C. 4 + 9i

D. pi

+2
Answers (1)
  1. 2 January, 20:49
    0
    C 4+9i

    Step-by-step explanation:

    A complex number has to have a real and imaginary part.

    It is in the form a+bi

    A. - 7 real

    B. 2 + square root of 3 real

    C. 4 + 9i real + imaginary = complex

    D. pi real
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