abs x－1+abs x+3<5
    absx－1+absx+3<5
    e^x-2＞2x
    -lnx大于0
    4x-1/x-1>0
    -1<=2*x/(1+x)<=1
    (a+2)/a+10<0
    -35a^2+4a+4>0
    1/7(p^2-p-2)-p/7-13/7+1 <0 1/7(p^2-p-2)>0 1/7(p^2-p-2)-2(p/7+13/7)+4>0
    1/7(p^2-p-2)-p/7-13/7+1>0
    -27(p-1)^2+140＞0
    4-4（k+1）＞0
    (p+13)^2-28(p^2-p+2)＞0
    5x-3x²-2＞0
    m^2-4m+4 >0
    3x^2-4496x+13500<0
    abs(2x-2)/sqrt(x^2+1)＜1
    1000x+800(10-x)>=8500
    4a²-12a+1＜0
    x+x/2+2 >= 2+2√x*x/2

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