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Thread: Negative Radicals

  1. #1 Negative Radicals 
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    How do you simplify negative radicals?

    Take for instance sqrt(-108)...


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  3. #2  
    Forum Radioactive Isotope MagiMaster's Avatar
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    You need imaginary numbers (i = sqrt(-1)), but with that, it's usually pretty simple.

    Your example: sqrt(-108) = sqrt(-1 * 108) = sqrt(-1)*sqrt(108) = i*sqrt(108)

    Of course, if you had something like sqrt(1 - sqrt(-2)), you'd get sqrt(1 - i*sqrt(2)), which is still a complex number, but isn't quite so simple.


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  4. #3  
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    All right thanks for the help.
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