e^3x - 4e^2x - 2e^x =0
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Nebuchadnezzar
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[tex]e^{3x} - 4e^{2x} - 2e^x =0[/tex]
[tex](e^x)^3- 4(e^{x})^2 - 2(e^x) =0[/tex]
[tex]u=e^x[/tex]
[tex](u)^3- 4(u)^2 - 2(u) =0[/tex]
[tex](e^x)^3- 4(e^{x})^2 - 2(e^x) =0[/tex]
[tex]u=e^x[/tex]
[tex](u)^3- 4(u)^2 - 2(u) =0[/tex]

