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4 December, 09:00

The product of a complex number and its conjugate is a real number.

A. True

B. False

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Answers (1)
  1. 4 December, 09:38
    0
    A True

    given z = a + bi then the conjugate is z = a - bi where a and b are real then

    (a + bi) (a - bi) = a² + b² (a real number)
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