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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -4x^3+25x^2-20x+4 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -4 * x ^ 3 + 25 * x ^ 2 - 20 * x + 4 <0         (1)

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    From inequality(1)：
         0.325662 < x < 0.573911 或  x ＞ 5.350427

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    The final solution set is :
         0.325662 < x < 0.573911 或  x ＞ 5.350427

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