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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （6×k^2+4k+4）^2-4×（k^2+1）×（9k^2+6k+7） ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 6 × k ^ 2 + 4 * k + 4 ) ^ 2 - 4 × ( k ^ 2 + 1 ) × ( 9 * k ^ 2 + 6 * k + 7 ) ≥0         (1)

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    From inequality(1)：
         k ≥ 0.655404

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    The final solution set is :
         k ≥ 0.655404

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