Mathematics
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    -X^2+4X-4<0
    10X^2-33X+20<0
    X^2-2X<0
    X^2-X+2<0
    X^2-X+5<0
    X^2-4X+5<0
    -2X^2-6X<0
    -2X^2-6X-5<0
    3X^2-7X>10
    3X^2-7>10
    3XX-7>10
    abs(2X-1)≥1
    abs(2X+3)<1
    abs(X+3)>abs(X-5)
    abs(X-2)≥3
    abs(X-2)<9
    abs(2X-1)≥3
    26700+x-10%x÷12×3≥50080
    abs(X+2)<3
    abs(X-2)≤12

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