Mathematics
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    x-32>x*x+5x-2
    40[50-10(x-50)]<3000
    x*1.04>(1-x)*1.09
    -1=<(2x-1)/7<=1
    x(30-2x)>100
    x≤-2 x>-1
    x^2-3*abs(x)+2>0
    x²-2x-3≤0
    x²-5x+9>0
    abs(x-1)+abs(x-2)>5
    9-x²≥0
    (x+2)(x-3)>0
    30^(1-x)+3*60^(1-x)>4*50^(1-x)
    30^(1-x)+3*60^(1-x)>4*45^(1-x)
    30^(1-x)+3*60^(1-x)>4*60^(1-x)
    30^(1-x)+3*60^(1-x)<4*40^(1-x)
    30^(1-x)+3*60^(1-x)>4*40^(1-x)
    √(1-x^2)<1
    √(1-x^2)>1
    (3x+4)(3x-4)>9(x-2)(x+3)

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