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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -2.77X^3+4.305X^2+67.1X+83.0967 >= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -2.77 * X ^ 3 + 4.305 * X ^ 2 + 67.1 * X + 83.0967 >= 0         (1)

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    From inequality(1)：
         X ≤ -3.125393 或  -1.542617 ≤ X ≤ 6.222161

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    The final solution set is :
         X ≤ -3.125393 或  -1.542617 ≤ X ≤ 6.222161

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