Mathematics
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    (5-2a)>(25-8a)^(1/2)
    8a^2-3a-8<0
    14514+a<114514
    5+a<8
     a + 14514 > 114514
    a+14514>=114514
    a+6>7
    X+5X+25X+250X+2500X≤5600
    3【3(3x-2)-2]-2>28
    3【3(3x-2)-2】-2≤28
    3【3(3x-2)-2]-2>28
    1-3/(x-1)≤2/(2x+3)
    -2x<0
    0.3x^3-0.382x-5.81≥0
    9<=(k+1)^2<=27
    (k+1)^2<=9
    x+1≤9 -114514x<1919810
    -114514x<1919810
    0.5-0.5m<4/5
    (2x+5)/3-1小于等于2-x

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