Mathematics
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current location:Mathematical operation > History of Inequality Computation > Answer
    Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -(7*k+2)-sqrt((2+7*k)^2-4+28*k) <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality:
        -( 7 * k + 2 ) - sqrt ( ( 2 + 7 * k ) ^ 2 - 4 + 28 * k ) <0         (1)
        From the definition field of √
         ( 2 + 7 * x ) ^ 2 - 4 + 28 * x ≥ 0        (2 )

    From inequality(1):
         k > -0.050607
    From inequality(2):
         k ≤ -8/7 或  k ≥ 0

    From inequalities (1) and (2)
         k ≥ 0    (3)

    The final solution set is :

         k ≥ 0




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