t^2-t＜0
    4*x^2-4*x+1>0
    x^2-x-6≥0
    1140x+228000/x+27000≤70000
    3X²-7X+2<10
    1/n+1＜ln（1+1/n）
    2-x^2>x*e
    2.8125x+2.25x≥7.59375
    4:3:2:1x+1.5x≥7.59375
    1.5x+2≥1.5%
    1.5x+2≥5.0625
    4m^2-2m-31＜0
    23.565x^0.25-x^1.25≤224.288
    -xx+2x-1<0
    -x2+2x-1<0
    4（4x+1）+1>85
    (27.8-27)x+（25.8-24.4）（20-x）＞20.5
    10 + 3 x + 2 (48 - x) ＞110
    x+3＞5
    aa-8<0.875aa-4

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