2-3x<0
    abs(x+1)+abs(x+3)+abs(x+5)>5
    log(x-2,x^2-8x+15)>0
    sqrt(x^2-3*x-10)>x-2
    abs(x^2-5*x+4)
    log(a,1/2)<1
    sqrt(4*x-3)-x<0
    1+x-x^2>0
    1+x-x2>0
    2*x^2-3*x+4>0
    x^2-3x+1≤0
    2k-2>0
    (2+3k)^2-4(2k-2)>0
    x^2+2x>4-x
    2-x>2x+1
    x-2>0 2x+1>0 x-2>2x+1
    x-2>2x+1
    2-x<2x+1
    x-2<0 2x+1<0 x-2<2x+1
    k(k+4)>0

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