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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 108+18z ≥900-60z+z^2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        108 + 18 * z ≥900 - 60 * z + z ^ 2         (1)

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    From inequality(1)：
         12 ≤ z ≤ 66

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    The final solution set is :
         12 ≤ z ≤ 66

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