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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 5*n^2+n-500 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        5 * n ^ 2 + n - 500 <0         (1)

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    From inequality(1)：
         -10.1005 < n < 9.9005

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    The final solution set is :
         -10.1005 < n < 9.9005

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