-16x^2+48x-32≥0
    a+sqrt(a^2-a)<1
    {2x-1>=3{3x-2<7
    {2x-1>=3 {3x-2<7
    -x＜-6
    x-6<0.1
    10x<2/5
    |1/3x>|=7
    1/3x>=7
    3x>=7
    (2x+1)/(2x-1)＞0
    5X（X+2）大于0
    1<=x<=3
    X>3/2（30-x)
    x-1/2＞＝4-2x＋3/3
    2/x-1＞＝4-3/2x＋3
    (940000-y)/1000000*sqrt(8*1000000^3/((940000+y)*(2000000-940000-y)))>1.96
    a>1
    a^2-3a+18>a^2
    2a^2－3a＋9>9

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