Mathematics
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    3^x+x^2-4^x+x^x<0
    3^x+x^2-4^x+x^x>0
    (1-2m)2-4(m2+m-1)≥0
    3^x<4
    x^3+5x^2+3x<0
    x^2<0
    3*x-2<5*x+1
    3*x-2<2*x+1
    abs(5x-3)<2-5x
    x*cosx-sinx>0
    -2x²+3<2
    x-32>x*x+5x-2
    40[50-10(x-50)]<3000
    x*1.04>(1-x)*1.09
    -1=<(2x-1)/7<=1
    x(30-2x)>100
    x≤-2 x>-1
    x^2-3*abs(x)+2>0
    x²-2x-3≤0
    x²-5x+9>0

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