Mathematics
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    abs(x-1)<=1
    abs(7x-9)>=-8
    4x^2-19x-5<=0
    3x^2+5x-28<0
    (7411500+382*x-2600000)/sqrt((1274778^2+(25.632*x)^2+45844000000) ) > 3.7
    2/(1-x)-1>0
    m^2>4
    m^2<4
    m2<4
    4-4×(-1)×(x-1)>0
    4-4×(-1)×(x-1)<0
    (2x-1)(3-2x)<0
    7-a>2 2a-3>0
    50×(1+12%)×(50-y)+72×(1-5%)y≤3050
    9^2x+1>27^3-x
    40(1000-10x)<10000
    (x+1)(2x-1)>0
    x2-2x-3<0
    (-x*x-3*x)/x<-1
    sinx>0.5

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