Mathematics
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    11.7<(23100+11.7*x)÷(1500+x)<11.9
    (23100+11.7*x)÷(1500+x)>11.7
    13-4x2>0
    n^(3/2)>n*log(2,n)
    n^(3/2)
    
e^x >5
    ln(x)<0
    ((a-1)/a)²+(4/a)²>0
    (-a-1/a)²+(4/a)²>0
    2a²+a-1>0
    12(x+1)^2+e^x>0
    -1+2x>-x
    ln(2-X)≥0
    1-X^2≥0
    ln(2-x)>-1
    2-x>-1
    2-x<1
    (x-3)×(x-7)>0
    x^2-35*x+250<=0
    x^2-35*x+500<=0

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