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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -sqrt(a^2-a-2)-a >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -sqrt ( a ^ 2 - a - 2 ) - a >0         (1)
        From the definition field of √
         x ^ 2 - x - 2 ≥ 0        (2 )

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    From inequality(1)：
         a ＞ -2
    From inequality(2)：
         a ≤ -1 或  a ≥ 2

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    From inequalities (1) and (2)
         -2 < a ≤ -1 或  a ≥ 2    (3)

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    The final solution set is :
         -2 < a ≤ -1 或  a ≥ 2

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