x<-1>0
    x+2<1 x+4>5
    sqrt(k)>-1
    sqrt(k)<-1
    （146400*5000/900000-5000*x)/sqrt(5000*x*(1-x))>=4.0
    （146400*5000/900000-5000*x)/sqrt(5000*x*(1-x))>=1.645
    （146400*200000/900000-200000*x)/sqrt(20000*x*(1-x))>=1.645
    （146400*200000/900000-200000*x)/sqrt(200000*x*(1-x))>=1.645
    （146400*10000/900000-10000*x)/sqrt(10000*x*(1-x))>=1.645
    （0.1627-x)/sqrt(x*(1-x))>=1.645/sqrt(100000)
    （0.1627-x)/sqrt(x*(1-x))>=1.645/sqrt(500000)
    （0.1627-x)/sqrt(x*(1-x))>=1.645/sqrt(5000)
    （0.1627-x)/sqrt(x*(1-x))>=1.645/sqrt(300000)
    （0.1627-x)/sqrt(x*(1-x))>=1.645/sqrt(200000)
    （0.1627-x)/sqrt(x*(1-x))>=1.645/sqrt(10000)
    （0.1627-x)/sqrt(x*(1-x))>=0.01645
    x≤6x+5
    1+x<4
    sqrt(x-27) -2x+3<0
    sqrt(x-27) -2x+3<0>

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