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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 5*(x^2)-4*x-2 <= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        5 * ( x ^ 2 ) - 4 * x - 2 <= 0         (1)

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    From inequality(1)：
         -0.348331 ≤ x ≤ 1.148331

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    The final solution set is :
         -0.348331 ≤ x ≤ 1.148331

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