Mathematics
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    x²<8
    x(1-2x)≤0
    (x+1)(x-4)(6-x)<0
    (x+1)(x-4)(6-x)<0
    (x+1)(x-4)(6-x)<0
    (x+1)(x-4)(6-x)<0
    16m²-12m<0
    x+88/2>88
    44+77>6
    (12-x)x大于20
    220x+190(8-x)>=1565
    [4-x]/[x-1]>0
    [3x+9]/[x-1]>7
    [2x+1]/[x-2]>1
    x/[2x-1]>1
    x(1-2x)≤0
    x(1-2x)≥0
    (2-x)(4+x)≥0
    (x+2)(x-1)≤(x-2)(2x+1)
    (x+2)(x-1)≥(x-2)(2x+1)

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