1/1-x
    x/1-x<1/1-x
    sqrt(x-2)>=4-x
    1/x-1+1/x-3>1/x-5+1/x+1
    x^4-8*x^2+4>0
    1.6=3.036sin(3.14x)*sin(3.14x)*sin(3.14x)+14.3*x*[1-sin(6.28x)/(6.28x)]*{sin(3.14x)+sin[3.14*(1.25-2x)]}/[(1.25-3x)*3.14]
    0.0119=3.036*sin(3.14x)*sin(3.14x)*sin(3.14x)+14.3*x*[1-sin(6.28x)^(6.28x)]*{sin(3.14x)+sin[3.14*(1.25-2x)]}^[(1.25-3x)*3.14]
    5x+56
    3/2－m>0
    3M－1>0
    X1+X2-2≤0;X1+5X2-5≤0;X1≥0;X2≥0
    x^4-8x^2-9<0
    -sqrt(x^2+1)<2-2x
    80×（75-a）+90×a≤6300
    4m^(2)－1<0
    32m^(2)－36m＋7<0
    x-5≤(3/2)*(3x-2)
    [（5a/a+1）-（2a/a-1）]*(a^(2)-1/a)
    [（5a/a+1）-（2a/a-1）]
    x/2+1<2(x-1)

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