x＋√（x∧2－1）＞0
    81x^2-10x+1/9≤0
    2^x > x^4
    X^2-3X-8<0
    x/1500-x/5000<=0.1 x/340-x/1500<=0.1 x/340-x/5000<=0.2
    x/1500-x/5000<=0.1 x/340-x/1500>0.1 x/340-x/5000>0.2
    x/1500-x/5000>0.1 x/340-x/1500<=0.1 x/340-x/5000>0.1
    x/1500-x/5000<=0.1 x/340-x/1500>0.1 x/340-x/5000>0.1
    x/1500-x/5000<=0.1 x/340-x/1500<=0.1 x/340-x/5000<=0.1
    x/1500-x/5000>0.1 x/340-x/1500>0.1
    x/1500-x/5000<=0.1 x/340-x/1500>0.1
    x/340-x/5000<=0.1 x/340-x/1500<=0.1
    x/340-x/5000<=0.1
    x/340-x/1500<=0.1
    x/(220-x)>=0.1
    x/340-x/1500>0.1
    x/1500-x/5000<=0.1
    x/1500-x/5000>0.1
    3(x+2)-8 >=1-2(x-1)
    153x+103<41x

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