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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality m^2－4m－28 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         m ^ 2 - 4 * m - 28 <0         (1)

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    From inequality(1)：
         -3.656854 < m < 7.656854

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    The final solution set is :
         -3.656854 < m < 7.656854

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