(3y-1)＾2-4y(3y-1)≥0
    (x+1)/(x-1)>-x
    (2x+1)/(x-3)<1
    xxx+8x-9>0
    x3+8x-9>0
    -12*m*m-32*m+64>0
    （2m-8)*(2m-8)-16m*m>0
    45÷x^2>2
    23÷x>1
    45÷x^2>2
    45÷x^2≥2
    x^3≥2
    x^2-9>=8
    x-4 < -3x x-1 < (5x-4) / 2
    x*（4300-x）≤56528.7958
    1.0×2159.4×1000000≤19.1×2000×(2140-x/2)
    1.0×2159.4×10^6≤19.1×2000*(2140-x/2)
    3×3-3x+2÷2>6÷3
    ( 1 + x ) ^ 28 > ( 1 + x ) ^ 20 * 160000.0
    ( 1 + x ) ^ 28 > ( 1 + x ) ^ 18 * 160000.0*20

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