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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 20-k^2+10k/10-k >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        20 - k ^ 2 + 10 * k / 10 - k >0         (1)

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    From inequality(1)：
         -√20 < k < √20

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    The final solution set is :
         -√20 < k < √20

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