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)]/(2x+5) >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( ( x - 1 ) * ( x + 2 ) ) / ( 2 * x + 5 ) >0         (1)
        From the definition field of divisor
         2 * x + 5 ≠ 0        (2 )

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    From inequality(1)：
         -2.5 < x < -2 或  x ＞ 1
    From inequality(2)：
         x < -5/2 或  x ＞ -5/2

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    From inequalities (1) and (2)
         -2.5 < x < -2 或  x ＞ 1    (3)

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    The final solution set is :
         -2.5 < x < -2 或  x ＞ 1

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