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

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

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    From inequality(1)：
         -1 < x < 2

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    The final solution set is :
         -1 < x < 2
[ 2/2Inequality]
    Assignment:Find the solution set of inequality -6x^2+x+1 >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -6 * x ^ 2 + x + 1 >0         (1)

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    From inequality(1)：
         -1/3 < x < 1/2

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    The final solution set is :
         -1/3 < x < 1/2

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