Mathematics
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    (-x+√((x)²-8))÷2>1
    x^2-4>0
    x-2≤2/3x+2/3x^2≤5
    1+2/3x≥3/2 x^2≤1
    1+x≤x^2
    lg(10x-10)<1
    lg(10x-10)<0
    lg(10x-10)<1
    3X^2-26X-9=0X>=0,X=
    lg(10x-10)<0
    x/3>-33
    π>0
    log(3,(2x-1))>0
    x²-x-6>0
    33+X-(600+X)×67÷4≥60
    33+X-(600+X)×67÷4≥60
    33+X-(600+X)×67÷4≥60
    0<(1-√(1-4a))/2a<2
    0≤(1-√(1-4a))/2a≤2
    639+19x>0 1704+7x<0

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