Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 25a^2-36 >= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        25 * a ^ 2 - 36 >= 0         (1)

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    From inequality(1)：
         a ≤ -6/5 或  a ≥ 6/5

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    The final solution set is :
         a ≤ -6/5 或  a ≥ 6/5
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 24a <= 64 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        24 * a <= 64         (1)

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    From inequality(1)：
         a ≤ 8/3

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    The final solution set is :
         a ≤ 8/3

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