Mathematics
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    (m-3)(m-3)+4(m*m-2m-3)<0
    m*m-2m-3<0
    x^2+x-1
    
x^2+x-1<0
    x^x<0
    65a/5≥1950
    66a/5≥1950
    53a/5≥1650
    (x+5)/3-1≥(3x+2)/5
    (x+5)/3-1≥3x+2/5
    x+5/3-1≥3x+2/5
    3-2x<9+4x
    2x^3-6.2x^2+9.08x-8.17>0
    -35a^2+4a+4>0
    x^2-x-2 >0 x^2-2x-2<0 x^2-3x>0 x <15 x >-13 (x+13)^2-28(x^2-x-2) >0
    x^2-x-2>0 x^2-2x-8<0 x^2-3x>0 (x+13)^2-28(x^2-x-2)>0 x>-13 x<15
    (x+13)^2-28(x^2-x-2)>0
    x(1-15%)≥6.11×(1+20%)
    x(1-15%)≥28×(1+30%)
    x(1-15%)≥11.11×(1+30%)

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