Mathematics
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    (-1+2x-x^2)(x^2+5x+4)*(x-3)^3>0
    (x^2-1)(x^2-5x+6)<0
    -(5*x^2+x-6)(x^2-2x-8)>0
    (-x+3)(2x-1)<0
    (2x-3)(x+1)≤0
    (-3x-5)(x+2)≤0
    (2x-3)(x+1)<0
    -x^2+x≥3x+1
    2*x^2-x-1>0
    1.5x+0.5>=4 8x<=8/3
    m^2-3*m<0
    m^2+m>0
    m+2<2m
    (x+1)(x-2)>x(x+2)
    -3x+9<0
    9^x-(28/3)*3^x+3≤0
    4+4(m+1)>0
    x+3-x^2>=0
    1/(x-2)<=(1+x)/(2-x)-3
    (x-3)/(2x-3)>2/3

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