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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -15.13844×n×n-1.4225×n×n×n+8174.70008+721.84×n ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -15.13844 × n × n - 1.4225 × n × n × n + 8174.70008 + 721.84 × n ≥0         (1)

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    From inequality(1)：
         n ≤ -21.828337 或  -11.569396 ≤ n ≤ 22.755596

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    The final solution set is :
         n ≤ -21.828337 或  -11.569396 ≤ n ≤ 22.755596

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