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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 336 <2x^2+12x+16 <513 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        336 <2 * x ^ 2 + 12 * x + 16         (1)
        2 * x ^ 2 + 12 * x + 16 <513         (2)

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    From inequality(1)：
         x < -16 或  x ＞ 10
    From inequality(2)：
         -19.046807 < x < 13.046807

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    From inequalities (1) and (2)
         -19.046807 < x < -16 或  10 < x < 13.046807     (3)

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    The final solution set is :
         -19.046807 < x < -16 或  10 < x < 13.046807

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