Mathematics
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    x²+x+2≥0
    a²-4a+4>0
    x-160x+5775>0
    12-4 X >7-3 X
    3 X-2 >1
    4/3X-2 >5
    x*x-x+1≥1/2(x-1/x)+1
    901*2.7*1.5x*4/2.5>1088*1.28*2.7*1.5x/1*1.4
    t^2-9/2t+32<0
    510+129n大于1100-40n
    4x²➕8x-5≥0
    -(2m-1)^2-4(2m-1)-3<-(m+1)^2-4(m+1)-3
    -(2m-1)^2+4(2m-1)-3<-(m+1)^2-4(m+1)-3
    -(2m-1)^2+4(2m-1)-3<-(m+1)^2+4(m+1)-3
    (4-2m)^2-4m<0
    2^(x^2-4x-3)<(1/2)^[3(x-1)]
    3^(x^2-4x)>1/27
    1>(1-x/40)(1-x/80)>0
    sinx/(2-cos(2*x))>x
    -2<t^2-1<2

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