Mathematics
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    (2a+2)^2-4a^2+4<0
    x(6x+5)<4
    19200+0.12x(x+50)≤140(x+50)
    2/x+2>3
    (2-x)*(2x-1)>0
    (x^2+8x+16)*(x-3)*(x-1)≤0
    27-x<14
    (2-x)(x+3)<0
    a^2-3a-4>a+2
    x^2+4x+3<=0
    x^2-2x-3>0
    35-6x>0 20-4x>0
    6x^2+x<40
    x^2-5x+6>=0
    x^2+4x-21>0
    m^2-20m+64≥0
    3x/2-1>=x+4/2 10-x>7
    x^2-2x-8>0
    2x+7<0
    m^2>=16

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