abs(x+1)＞abs(3-2x)
    1-(4-y)^2>=0
    x+(x^2-4)^1/2＞0
    10000/x+10000/(x+115*0.25)＜150
    20000/(x+115*0.6)＜100
    20000/(x+34.5)＜100
    20000/(x+115*0.3)＜100
    10000/x+10000/(x+115*0.3)＜150
    10000/x+10000/(x+115*0.3)+10000/(x+115*0.6)＜150
    10000/x+10000/(x+115*0.3)＜150
    x+2≥2
    X+3/x -3>2
    x^2>-1
    x^2<-1
    x^2≤0
    x^2<0
    -3/1＜＝x/1
    -x²＋4x-4＜0
    x^2-x-5>abs(2x-1)
    abs(x^2-2x-3)>2

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