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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 5t^2+12t-2 <= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        5 * t ^ 2 + 12 * t - 2 <= 0         (1)

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    From inequality(1)：
         -2.556466 ≤ t ≤ 0.156466

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    The final solution set is :
         -2.556466 ≤ t ≤ 0.156466

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