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Math Help - Help with complex numbers?

  1. #1
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    Help with complex numbers?

    question 5 in the attached pdf..


    Please explain.. I know you get to a point where it is the sq root of -11 but idk what to do after this . Please help
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  2. #2
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    Re: Help with complex numbers?

    \displaystyle \begin{align*} \sqrt{-11} = \sqrt{-1 \cdot 11} = \sqrt{-1} \cdot \sqrt{11} = i\sqrt{11} \end{align*}
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  3. #3
    Forum Admin topsquark's Avatar
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    Re: Help with complex numbers?

    Not a graded assignment.

    -Dan
    Last edited by topsquark; November 8th 2012 at 10:00 AM.
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