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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality sqrt(16a^2+20a)/a <6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         sqrt ( 16 * a ^ 2 + 20 * a ) / a <6         (1)
        From the definition field of √
         16 * x ^ 2 + 20 * x ≥ 0        (2 )
        From the definition field of divisor
        x ≠ 0        (3 )

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    From inequality(1)：
         a ＞ 1
    From inequality(2)：
         a ≤ -5/4 或  a ≥ 0
    From inequality(3)：
         a < 0 或  a ＞ 0

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    From inequalities (1) and (2)
         a ＞ 1    (4)
    From inequalities (3) and (4)
         a ＞ 1    (5)

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    The final solution set is :
         a ＞ 1

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