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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -4*K^2-8K+9 >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -4 * K ^ 2 - 8 * K + 9 >0         (1)

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    From inequality(1)：
         -2.802776 < K < 0.802776

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    The final solution set is :
         -2.802776 < K < 0.802776

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