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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4-sqrt(x^2-6x) >= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        4 - sqrt ( x ^ 2 - 6 * x ) >= 0         (1)
        From the definition field of √
         x ^ 2 - 6 * x ≥ 0        (2 )

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    From inequality(1)：
         -2 ≤ x ≤ 8
    From inequality(2)：
         x ≤ 0 或  x ≥ 6

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    From inequalities (1) and (2)
         -2 ≤ x ≤ 0 或  6 ≤ x ≤ 8    (3)

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    The final solution set is :
         -2 ≤ x ≤ 0 或  6 ≤ x ≤ 8

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