8*x^2-100000-11*x＞0
    8*x^2-100000-1.1*x＞0
    0.8x^2-1.08x-10000＞0
    3x+5(500-x)<=2100
    (x+1)^(-1/2)<(10-2x)^(-1/2)
    2^(x^2-x)<4
    log(2,(x-1))>0
    lg(2x-4)<=1
    2x＾2-3x+3>0
    （8-4m）*(6m+14)<0
    26700+X-X*2.5%大于等于50000
    2-21-24>0
    26700+X-X*2.5%>50000
    X*X-6X+1＞0
    （72000/πx^2）+（32*7200/πx^3）≤35000000
    23.04x+7.2≤3500πx^2
    3500πx^2-23.04x≥7.2
    (3x+4)(3x-4)<9(x-2)(x+3)
    4/x<-2x+6
    2^(x^2+1)≤(1/4)^(x-2)

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