1.254*10^-14*k+1.0132*10^-10-1.65*10^-11>0
    3.8*10^-8*k+3.3*10^-6-5*10^-5>0
    15-9x大于10-4x
    （5000×12×0.9-70%×130X×6.4%）÷（30%×130X+5%×130X）=3.8%
    ((1.254*((10)^-14)*k+1.0132*((10)^-10)-1.65*((10)^-11))*(3.8*((10)^-8)*k+3.3*((10)^-6)-5*0.00001)-(3.3436*(10)^-17)*(0.00001*k+10)>0
    ((1.254*((10)^-14)*k+1.0132*((10)^-10)-1.65*((10)^-11))*(3.8*((10)^-8)*k+3.3*((10)^-6)-5*0.00001)-(3.3436*(10)^-17)*(0.00001*k+10))<0
    10<(√x +1)/x
    (x-3)(x-5)<=0
    abs(4x-3)<=1
    abs(4x-3)<1
    ((1.254*((10)^-14)*k+1.0132*((10)^-10)-1.65*((10)^-11))*(3.8*((10)^-8)*k+3.3*((10)^-6)-5*0.00001)-(3.3436*(10)^-17)*(0.00001*k+10))>0
    ((1.254*10^-14 *k+1.0132*10^-10 -1.65*10^-11)*(3.8*10^-8 *k+3.3*10^-6 -5*10^-5)-(3.3436*10^-17)*(0.00001*k+10))>0
    3x+2小于等于4x
    x-5大于1+2x
    x+2小于等于4x-1
    x+2大于等于4x-1
    2x大于等于1-x
    x^3-2x^2+x-1<0
    (5x-1)÷2>x-2
    3x≥4x-1

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