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Math Help - Find the range value

  1. #1
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    Find the range value

    Find the set of value of k, where k is a constant, when equation x^3 -12x^2 +45x -34 = k has (a)one root and (b)three roots.
    How should I get start with the problem like this?
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  2. #2
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    Re: Find the range value

    Am I correct in assuming you want real roots?
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  3. #3
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    Re: Find the range value

    Yes.
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