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

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

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    From inequality(1)：
         0 < x < 1

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    The final solution set is :
         0 < x < 1

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