Mathematics
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    3(x-2)-x>0
    1/(1+x)
    
1/(1+x)
    
0.4m+280<314+0.32m
    −3小于等于2
    3*x^2-4x+2 <0
    3*x^2-4x+2 >0
    a^2≥8
    -1(x^2+1)+1(x-1)+2+2<0
    (x-1)(x-2)<2
    0<x^2-x-2≤4
    0<x^2-x-2≤0
    -3x^2-2x+8≥0
    9a^2≥72
    20/t<=60
    8a+60-6a≤76
    8a+60-6a≥72
    ((3√3)/2 (5/√3+6l+30)^2-127π×〖2.5〗^2)/((3√3)/2 (5/√3+6l+30)^2 )≥0.13
    ((3√3)/2 (5/√3+6l+30)^2-127π×〖2.5〗^2)/((3√3)/2 (5/√3+6l+30)^2 )≤0.19
    x^2-4>5

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