x^(2)-3x-10≤0
    x^(2)+3x+2<0
    x^(2)-x-6<0
    x^(2)-x-6<6
    x^(2)-16≥0
    2x－1<3
    x^(2)-9<0
    x^(2)-2x<0
    2x-3>5
    X-2<7
    x^(2)－3x－10≤0
    (x-1)/2
    2x+5≤3(x+2)
    -3(x+2)<2x+4
    1+（1+5x）/2≥（2x-1）/3
    (1+2x)/3>x－1 (2x－1)/5>(x+1)/2 (x+2)/2>(x+3)/3 (x+3)/5<(2x－5)/3－1 (2x－1)/3－(3x－1)/2≥5/12 (1+2x)/3>x－1
    (x－3)/2<(2x-5)/3 (2x－1)/3≤(3x－4)/6 (x－3)/2≥(2x－5)/3 (5x+1)/6－2>(x－5)/4 (y+1)/6－(2y－5)/4≥1 (2+x)/2≥(2x－1)/3－2
    (x－3)/2<(2x-5)/3 (2x－1)/3≤(3x－4)/6 x－3/2≥2x－5/3 5x+1/6－2>x－5/4 y+1/6－2y－5/4≥1 2+x/2≥2x－1/3－2
    x－3/2<2x-5/3 2x－1/3≤3x－4/6 x－3/2≥2x－5/3 5x+1/6－2>x－5/4 y+1/6－2y－5/4≥1 2+x/2≥2x－1/3－2
    5－(2x-1)<-6x 5(x－2)+8<6(x-1)+7 2(2x+3)<5(x+1)

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