m²≤3+√2
    -1/(2x)<=0.1
    4x-6＜1
    x^2+7x>0
    t（t-59/12t）+6<0
    3x+2>10
    4-x^2>0
    x²+x-12≧0
    (2x-1)²≧0
    （x-2）（x-3）≧0
    3x+2>0
    -x²+2x-2/3＞0
    x（1-x）＞0
    x：1-x＞0
    -1.96<(x-2.5)/0.37<1.96
    (x-2.5)/ 0.37 > -1.96
    -X2+X+2<0
    X2-X=12≥0
    X2-X=12≥0
    2^x<4048+2x

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