x<2
    (m+√-3m^2+4)/2m+2<-1
    sin(x)<2
    2x-3＞-3x+7
    80(1+x)(80-10x)>=96
    80(1+x)(80-10x)>=0
    2x-33>0
    x+38<2x
    x2+2x-3 >0
    x2+2x-3>0
    4/3X-2>5
    x2-x-6>0
    16-2x>=4
    32/(8-x)>=4
    x^2-6x+9>0
    10x^2-19x+6<0
    12x^2-28x+16＜0
    e^(-a^2)>=1/4, e^(-a^2)<=3/4, (2*a^2-1)e^(-a^2)>=-1/4, (2*a^2-1)e^(-a^2)<=1/4
    e^(-a^2)>=1/4, e^(-a^2)<=3/4
    e^(-a^2)>=1/4, e^(-a^2)<=1/4,

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