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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 60-sqrt((60-x)^2+10.5^2) >18 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        60 - sqrt ( ( 60 - x ) ^ 2 + 10.5 ^ 2 ) >18         (1)
        From the definition field of √
         ( 60 - x ) ^ 2 + 10.5 ^ 2 ≥ 0        (2 )

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    From inequality(1)：
         19.333675 < x < 100.666325
    From inequality(2)：
         x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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    From inequalities (1) and (2)
         19.333675 < x < 100.666325     (3)

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    The final solution set is :
         19.333675 < x < 100.666325

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