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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 20-10k-k²/(10-k) >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        20 - 10 * k - k ^ 2 / ( 10 - k ) >0         (1)
        From the definition field of divisor
         10 - x ≠ 0        (2 )

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    From inequality(1)：
         k < 1.952621 或  10 < k < 11.380712
    From inequality(2)：
         k < 10 或  k ＞ 10

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    From inequalities (1) and (2)
         k < 1.952621 或  10 < k < 11.380712     (3)

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    The final solution set is :
         k < 1.952621 或  10 < k < 11.380712

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