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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 3860+500+2(500(1+x)+500(1+x)(1+x)) >= 7000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3860 + 500 + 2 * ( 500 * ( 1 + x ) + 500 * ( 1 + x ) * ( 1 + x ) ) >= 7000         (1)

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    From inequality(1)：
         x ≤ -16/5 或  x ≥ 1/5

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    The final solution set is :
         x ≤ -16/5 或  x ≥ 1/5

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