Mathematics
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    x+sqrt(1+x^2)<2
    -32K^2+47K-16>0
    5m+5>69 5m+336>666
    900*{1/x-1/[x*(1+x)^7]}-3000>=500*{1/x-1/[x*(1+x)^7]}-2000
    8-3x<6(x+1)
    x>3x+1
    x<3x+1
    x-2/x+2≥0
    1+a>1-a
    1>1
    6+x+x^2≥0
    -1/3x<-x+2≤3
    x^≥4
    (x+1)(x+2)>0
    5x(x+871)>7888
    13u^2+u+57>0
    2*n-48>0 2*(n-1)-48<=0
    e^x<x^(ln(sinx)x)
    x-11<-18
    (2x-1)/3-(9x-2)/6≤1

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