2<>3
    -（x+1）^0.5-9>0
    -（x+1）^1/2-9>0
    abs((1+2*x)^(1/4)-(1+0.5*x))<0.1
    2>a^3
    4
    m-1>3m-2
    （4500×12×0.9-60%×70X×6.95%）÷（40%×70X+50%×70X）=3.8%
    2x（2x）=5
    a-6<6
    sinx/x>1/2
    1
    (x+1)/2-(x-1)/3>1
    1+2x>-1
    x^5-5*x^4-x^3+29*x^2+9*x-29=0
    x-1<0<3-x
    3-x
    0<3-x
    50-x>x
    4x^2-44x+132>

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