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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （2y－4）²－4（y－2）（3y＋7） ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 2 * y - 4 ) ^ 2 - 4 * ( y - 2 ) * ( 3 * y + 7 ) ≥0         (1)

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    From inequality(1)：
         -9/2 ≤ y ≤ 2

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    The final solution set is :
         -9/2 ≤ y ≤ 2

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