Mathematics
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    256x^2-628x-128<0
    256x^4-628x^2-128<0
    2(2x-1)<5(x+1)
    4x+2.5(60-x)≤198 1.5x+3.5(60-x)≤150
    X+6>5
    2(x-3)-3(x-2)<0
    x/2-x/3>1
    300*0.8y+200[30*1+(20-1)*1-y]<=10800
    45a+60(4+3-a)≥385
    300*(0.8y)+200[30*1+(20-1)*1*2*y]<=10800
    300*(0.8y)+200[30*1+(20-1)*1*2*y]<=10800
    0.5x-1<7-3/2x
    3-2x>x+2
    2(2x-1)<5(x+1)
    5x<2(x-1)
    m^2+10m-7>0
    8-5(x-2)<4(x-1)+3
    84<126x^-3
    -1<3x-3-x+2<5
    0<3x-3-x+2<5

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