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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 9m²+72m-4 ≤0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        9 * m ^ 2 + 72 * m - 4 ≤0         (1)

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    From inequality(1)：
         -8.055175 ≤ m ≤ 0.055175

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    The final solution set is :
         -8.055175 ≤ m ≤ 0.055175

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