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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality a^2+3a-4 ≥1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a ^ 2 + 3 * a - 4 ≥1         (1)

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    From inequality(1)：
         a ≤ -4.192582 或  a ≥ 1.192582

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    The final solution set is :
         a ≤ -4.192582 或  a ≥ 1.192582

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