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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (2x-6)(x+5)(x+5) <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 2 * x - 6 ) * ( x + 5 ) * ( x + 5 ) <0         (1)

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    From inequality(1)：
         x < -5 或  -5 < x < 3

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    The final solution set is :
         x < -5 或  -5 < x < 3

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