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

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

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    From inequality(1)：
         x < -2 或  -1 < x < 0
    From inequality(2)：
         x < -2 或  -2 < x < -1 或  x ＞ -1

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    From inequalities (1) and (2)
         x < -2 或 或  -1 < x < 0     (3)

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    The final solution set is :
         x < -2 或 或  -1 < x < 0

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