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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 17 >x^2 >15 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        17 > x ^ 2         (1)
         x ^ 2 >15         (2)

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    From inequality(1)：
         -√17 < x < √17
    From inequality(2)：
         x < -√15 或  x ＞ √15

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    From inequalities (1) and (2)
         -√17 < x < -√15 或  √15 < x < √17     (3)

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    The final solution set is :
         -√17 < x < -√15 或  √15 < x < √17

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