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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -（n+n）^2/2+36 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -( n + n ) ^ 2 / 2 + 36 <0         (1)

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    From inequality(1)：
         n < -√18 或  n ＞ √18

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    The final solution set is :
         n < -√18 或  n ＞ √18

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