Mathematics
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    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
    sinx>-0.5
    [2(m-3)]^2-4×m^2+1>0
    (98*t^3 - 63*t^2 + 3)<0
    48m+40(80-m)≤3600
    -10x^2+1400x-40000>8000
    -10x^2+1400x+40000>8000
    -x>x^2-1

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