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    2x^2-3x-4=0
    x+x*0.012=3.4042
    x+x*0.12=3.4042
    x5=1
    x+x*0.12=3
    x^5=1
    x-7.6=43.2-x+7.6
    x-(43.2-x)=15.2
    x*0.3+x=9.1
    x×√(x^2+25)×√(x^2+4)=6
    x×√(x^2+25)×√(x^2+4)=6
    x×√(x^2+25)×√(x^2+4)=6
    (a^2-73)^2=73
    a×sqrt(a^2+25)×sqrt(a^2+4)=6
    (140-100-a)(300-2a)=1200
    x^2-94x+2128=0
    x²-37x+272=0
    m×m-2m=2021
    (140-100-a)(300-2a)=1200
    2x^2+8x-7

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