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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (x-75)(x-30) >1600 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( x - 75 ) * ( x - 30 ) >1600         (1)

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    From inequality(1)：
         x < 6.606101 或  x ＞ 98.393899

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    The final solution set is :
         x < 6.606101 或  x ＞ 98.393899

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