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Math Help - complex numbers

  1. #1
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    complex numbers

    Can anyone help?

    I need to express the complex number

    z=7+i/3-i

    in cartesian form.

    Thanks.
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  2. #2
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    I assume this is \displaystyle z = \frac{7+i}{3-i}.

    If so, multiply top and bottom by the bottom's conjugate.
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  3. #3
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    Thank you so much, just being a bit of an air head today.x
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