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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (x+3)/(x^3+x^2-16x+20) <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( x + 3 ) / ( x ^ 3 + x ^ 2 - 16 * x + 20 ) <0         (1)
        From the definition field of divisor
         x ^ 3 + x ^ 2 - 16 * x + 20 ≠ 0        (2 )

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    From inequality(1)：
         -5 < x < -3
    From inequality(2)：
         x < -5 或  -5 < x < 2 或  x ＞ 2

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    From inequalities (1) and (2)
         -5 < x < -3     (3)

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    The final solution set is :
         -5 < x < -3

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