[m(m+2)]/(m-1)<0
    [m(m+2)]/(m-1)
    (2x-1)/5>(x+1)/2
    x-3(x-2)>=4
    [2a-sqrt(4a*a-16)>2
    [2a+sqrt(4a*a-16)]<8
    4(x+4)<3(x+6)
    （x+1）/3>=(3-x)5
    x＋6
    50*x-x^2≥2√50x-(-x^2)
    50x-2*x^2>=600
    50x-x^2>=600
    (1100x-700)×700≥70
    2（x－1）>2
    2（x）
    26700 + X - X * 10 % / 12 * 3 >50000
    1/2x-1<7-3/2x
    (1-0.05)x>1.5
    4a^2>0
    4^2>0

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