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    2z^3+9z^2+z=-6^(z+1)
    2z^3+9z^2+z=6^(z+1)
    (2z^3+9z^2+z)/6=-6^z
    (2z^3+9z^2+z)/6=6^z
    (2z^3+9z^2+z)/6=-6^z
    (2z^3+9z^2+z)/6=6^z
    w+arctanw=π
    w+arctanw=0.5*π
    (z^3+9z^2+2z)/6=2^(2z-1)
    w+arctanw=2.5*π
    z^3+10z^2+z=(7+e)^z
    2z^3+10z^2+3z=e^z
    2z^3+10z^2+3z=7^z
    2z^3+9z^2+2z=7^z
    2z^3+9z^2+2z=3^z
    (2z^3+9z^2+z)/6=3^z
    x^3-x+1/2=0
    (2z^3+9z^2+z)/6=2^z
    (2z^3+9z^2+z)/6=e^z
    x^2+6x-42=0

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