[Secreay]

2e^2x=e^x-2 show how to get this value please

[Mr M]

Make the substitution and solve a quadratic equation.

[Secreay]

2e^2x=e^(x-2)

sorry but if that was the case i would of done it i wrote it wrong

[f1mad]

Take ln of both sides to start off with.

[raheem94]

(Original post by Secreay)
2e^2x=e^(x-2)

sorry but if that was the case i would of done it i wrote it wrong

Can you complete it?

[steve2005]

(Original post by Secreay)
2e^2x=e^x-2 show how to get this value please

Is it 2e^(2x)=e^(x-2) or 2e^(2x)=(e^x)-2 or something else

[Mr M]

(Original post by Secreay)
2e^2x=e^(x-2)

sorry but if that was the case i would of done it i wrote it wrong

Make the equation equal to zero and factorise .

[PeteyB26]

If you don't like factorising quadratics you could go this way:

2e^(2x) = e^(x-2)
2 X e^x X e^x = e^x X e^-2
2 X e^x = e^-2
e^x = 1/2 e^-2
x = ln (1/2 e^-2)