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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （x+1）^2（x+4）/（x-1） ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( x + 1 ) ^ 2 * ( x + 4 ) / ( x - 1 ) ≥0         (1)
        From the definition field of divisor
         x - 1 ≠ 0        (2 )

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    From inequality(1)：
         x ≤ -4 或  x ≥ 1
    From inequality(2)：
         x < 1 或  x ＞ 1

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    From inequalities (1) and (2)
         x ≤ -4 或  x ＞ 1    (3)

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    The final solution set is :
         x ≤ -4 或  x ＞ 1

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