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Thread: SAT subject math 2 - Complex numbers

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  1. #1
    Junior Member
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    Jun 2013
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    SAT subject math 2 - Complex numbers

    SAT subject math 2 - Complex numbers

    Which of the following is the result of the product ?

    (A)
    (B)
    (C)
    (D)
    (E)

    Thanks!

  2. #2
    For the imaginary unit holds that

    So,

    Therefore the correct answer is (C).

  3. #3
    Junior Member
    Join Date
    Jun 2013
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    Thank you miranda!

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