20*X*20%*30≥(1000*30/30+150*30)/10%
    25*100*20%*X≥(1000*X/30+150*X)/10%
    20-5.344-0.304*x<=(-2.2622)*(44.981/9)^(0.5)*(12/11+((x-46.3636)^(2))/36750)^(0.5)
    45-5.344-0.304*x>=2.2622*(44.981/9)^(0.5)*(12/11+((x-46.3636)^(2))/36750)^(0.5)
    33-33.121-103.35*x>=2.1788*((33.737/12)^(0.5))*((15/14+((x-0.1336)^(2))/0.2899)^(0.5))
    32-33.121-103.35*x>=2.1788*((33.737/12)^(0.5))*((15/14+((x-0.1336)^(2))/0.2899)^(0.5))
    32-33.121-103.35*x>=2.1788*(33.737/12)^(0.5)*(15/14+((x-0.1336)^(2))/0.2899)^(0.5)
    1/(x+2)
    1/(a+1)>a
    30-4/5m≥0
    -1≤-（x-1/2）^2+13/4≤1
    (2m-1)-(m-1)>0
    x^2-4>=0
    sqrt(x^2-x)<0
    sqrt(x^2-x)>0
    9-3x>=0
    2x-4>=0
    3x+6>15
    3a+10≤−5
    −10a−1<−2

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