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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 10x∧3+33x∧2+20x-4.5 ≤0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        10 * x ^ 3 + 33 * x ^ 2 + 20 * x - 4.5 ≤0         (1)

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    From inequality(1)：
         x ≤ -2.38038 或  -1.092638 ≤ x ≤ 0.173018

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    The final solution set is :
         x ≤ -2.38038 或  -1.092638 ≤ x ≤ 0.173018

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