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Math Help - inequality

  1. #1
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    Sep 2005
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    please help

    I've been stuck on this inequality:

    [(x-9)/(x^3)1/(x+9)]<0

    The solution of this inequality consists one or more of the following intervals:
    (-infinity, A), (A,B), (B,C), and (C, infinity) where A<B<C

    Find A, B and C
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  2. #2
    Site Founder Math Help's Avatar
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    [(x-9)/(x^3)1/(x+9)]<0

    Here is a start:

    Find when the equality equals 0

    Looking at the equation there are three ways you could get 0 or undefined:

    when (x-9) = 0, x=9

    when (x^3)1 = 0, x=0

    and when (x+9) = 0, x=-9
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