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solve for the exponential equation

solve the equation e2x -4ex-5=0 

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Robert J. | Certified High School AP Calculus and Physics TeacherCertified High School AP Calculus and Ph...
4.6 4.6 (13 lesson ratings) (13)
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Solve by factoring,
(ex - 5)(ex + 1) = 0
Since ex > 0, the only solution is ex - 5 = 0.
x = ln5 <==Answer