0.5
    0.5
    sqrt(3)×x<2sqrt(x^2-x+1)
    x-√（5-x）＜7.86667
    x-√5-x＜7.86667
    2x^3-2x^2-10x+9>0
    （x-x^2+6）*（x^2+5x+7）≤0
    x^2-5x+6＜0
    45x-1/6+(40000000x-x^2/6)/(x-(54000x-200)/(200000-x/1200))>0
    45x-1/6+(40000000-x/6)/(x-(54000x-200)/(2000x-x/1200))>0
    45x-1/6+(40000000-x/6)/(x-(54000x-200)/(2000000000x-x/1200))>0
    45x-1/6+(40000000-x/6)/(x-(54000x-200)/(20000000x-x/1200))>0
    45x-89>0
    x-(54000x-200)/(200000-x/1200)>0
    45x-1/6+(40000000-x/6)/(x-(54000x-200)/(200000-x/1200))>0
    45x-1/6+(40000000-x/6)/(x-(54000x-200)/(200000x-x/1200))>0
    x2+x3+x4>=4 x1+x2+x3+x4+x5<=10 6*x1+6*x2-4*x3-4*x4+36*x5<=0 4*x1+10*x2-x3-2*x4-3*x5<=0
    (x-10)*x＜=-34
    (x^2-2）（x^2+1）≥0
    3x+1≦136

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