Mathematics
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    x^4+x^2-1<0
    m²-m-1>0
    x^2+2*x-3 > 0
    5x^2-17x-40≤0
    3k²+2k-2>0
    5a*a-4a+1>0
    (x²+4)^(-1/2)*(x²+5)≧1
    (x²+4)^(-1/2)*(x²+5)≧2
    x+1≧2
    x+1<5
    -2x^2+200 x>4950
    (544+172x)/(841+472x)<0.5
    (544+172x)/(841+472x)小于0.5
    (544+172x)/(841+472x)<0.5
    (544+172x)/(841+472x)<0.5
    (544+172x)/(841+472x)<0.5
    (544+172x)/(841+472x)大于0.5
    (544+172x)/(841+472x)大于1/2
    x^872+x^645-x^528≥x^1052
    (2-x)*(x-6)>3

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