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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality x（x-3）（2-x）（x+1） >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * ( x - 3 ) * ( 2 - x ) * ( x + 1 ) >0         (1)

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    From inequality(1)：
         -1 < x < 0 或  2 < x < 3

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    The final solution set is :
         -1 < x < 0 或  2 < x < 3

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