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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -（2a-1）^2-4（a-2）（a+0.5） ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -( 2 * a - 1 ) ^ 2 - 4 * ( a - 2 ) * ( a + 0.5 ) ≥0         (1)

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    From inequality(1)：
         -1/4 ≤ a ≤ 3/2

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    The final solution set is :
         -1/4 ≤ a ≤ 3/2

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