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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality x^4-2x^3-6x^2-2x <= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x ^ 4 - 2 * x ^ 3 - 6 * x ^ 2 - 2 * x <= 0         (1)

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    From inequality(1)：
         -1.348894 ≤ x ≤ -0.395932 或  0 ≤ x ≤ 3.744826

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    The final solution set is :
         -1.348894 ≤ x ≤ -0.395932 或  0 ≤ x ≤ 3.744826

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