Maths Paper 3 doubt

[elbeyon]

Hey everyone, I need your help to solve this eqn e^x+e^2x=e^3x . The final answer is x = o.481. Can anyone explain me the procedure ? Please help asap. Thanks in advance.

 

[VelaneDeBeaute]

These are some low quality images, but they'll give you an idea!

 

[VelaneDeBeaute]

 

[VelaneDeBeaute]

 

[elbeyon]

These are some low quality images, but they'll give you an idea!

Thank you so much. It helped a lot. Thanks for your effort.