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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 80(1+x)(80-10x) >= 96 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        80 * ( 1 + x ) * ( 80 - 10 * x ) >= 96         (1)

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    From inequality(1)：
         -0.986647 ≤ x ≤ 7.986647

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    The final solution set is :
         -0.986647 ≤ x ≤ 7.986647

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