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

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

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    From inequality(1)：
         -2.414214 < x < -2 或  x ＞ 0.414214
    From inequality(2)：
         x < -2 或  x ＞ -2

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    From inequalities (1) and (2)
         -2.414214 < x < -2 或  x ＞ 0.414214    (3)

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    The final solution set is :
         -2.414214 < x < -2 或  x ＞ 0.414214

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