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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (5-x)(x-6)(x+3)(x+7) ≤5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 5 - x ) * ( x - 6 ) * ( x + 3 ) * ( x + 7 ) ≤5         (1)

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    From inequality(1)：
         x ≤ -6.991961 或  -3.017366 ≤ x ≤ 5.054464 或  x ≥ 5.954863

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    The final solution set is :
         x ≤ -6.991961 或  -3.017366 ≤ x ≤ 5.054464 或  x ≥ 5.954863

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