Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -9*x^3+516*x^2-591*x+84 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -9 * x ^ 3 + 516 * x ^ 2 - 591 * x + 84 <0         (1)

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    From inequality(1)：
         0.166171 < x < 1 或  x ＞ 56.167163

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    The final solution set is :
         0.166171 < x < 1 或  x ＞ 56.167163

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