Mathematics
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    cos2x>1-2
    (x^2+5x-6)/(x-1)≥0
    (1-x)/(x+1)>0
    -x^2+10x-24<0
    (x-8)^2<19
    x+4>4x-2
    3x-1≥x+1
    (x+3)(x-4)<0
    x-4<2(x-1)
    1/2(x-1)≤1
    (-x-1)(2x-6)≥0
    lna-a/4<ln2+1
    x+2>4
    X-1<7
    X^2-42X+360<0
    4^2-4(5-a)>0
    (x-157)/x>0.3
    1/x>-2
    x/1>-2
    59n+n^2/2400≤0

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