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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality x^4+2x^3+5x^2+4x-4 >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x ^ 4 + 2 * x ^ 3 + 5 * x ^ 2 + 4 * x - 4 >0         (1)

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    From inequality(1)：
         x < -1.538473 或  x ＞ 0.538473

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    The final solution set is :
         x < -1.538473 或  x ＞ 0.538473

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