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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (x*x-5*x+5)*(x*x-5*x+5)-1 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( x * x - 5 * x + 5 ) * ( x * x - 5 * x + 5 ) - 1 <0         (1)

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    From inequality(1)：
         1 < x < 2 或  3 < x < 4

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    The final solution set is :
         1 < x < 2 或  3 < x < 4

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