Mathematics
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    (3x-4)/2-(x+1)/3>=2
    x²-2x+x-2<4
    (x+1)(x-2)<4
    -3x²+4x+15≦0
    -3x^2+6x+1大于等于0
    (1-2y)²-4(2y-1)(3y+1)≥0
    23y²+2y-5≥0
    x^tan5≥25
    x^tansintansinx≥0
    x^cos(x)+525>5222
    x^cos(x+lnx)+525>5222
    x^cos(x+lnx)+525>52
    x^cos(x+lnx)+525>520
    x^cos(x+lnx)+525>523
    x^cos(x+lnx)+525>525
    lnx+56^tanx-x^101>x
    x+2sinx-1>0
    (5x+1)/(x^2+x+1)>2
    lnx/x^(0.5)<-8
    lnx/x^(0.5)<-7

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