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Math Help - real numbers please help!

  1. #1
    Newbie Audriella's Avatar
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    Lightbulb real numbers please help!

    i have this funny feeling that the answer is right in front of my face i just cant see it and it is begining to bug me.

    so i have tried over and over again to do this problem but it is supposed to end up with an answer without a square root sign or a fraction. but it is supposed to have the i sign in it? i am so lost

    ok this is the question:

     (-81/25) ^ {1/10}

    it is supposed to be to the tenth root but i had to change the format because i do not know how to write roots on this forum.

    i know i should know this but i cant seem to figure it out.


    thank you so much for your time and help i really need it
















    sorry guys i just figured it out i was reading the problem wrong (because it is a computer based program i am doing my algebra 2 on) and they are square rooted not to the tenth root.
    which of course makes a whole lot more sense but i seem to like to make problems a whole lot more complicated then they are.

    but thank you for your time
    Last edited by Audriella; January 6th 2008 at 02:06 PM. Reason: add
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  2. #2
    MHF Contributor

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    Your title says REAL NUMBERS.
    There are no real numbers that are the tenth root of a negative number.
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  3. #3
    Newbie Audriella's Avatar
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    Quote Originally Posted by Plato View Post
    Your title says REAL NUMBERS.
    There are no real numbers that are the tenth root of a negative number.
    my title says that because that is the subchapter that the assignment this question comes from.
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  4. #4
    MHF Contributor

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    Even with the edit you did, it makes no difference.
    There are no real square roots of any negative real number.
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