Thursday

October 23, 2014

October 23, 2014

Posted by **Marcos** on Wednesday, October 30, 2013 at 9:46pm.

I would like help to solve this what i did was to take away the square root i squared both sides coming up with

(ln sqrt(x-8))^2= (5)^2

ln(x-8)=25

am i alowed to do this with ln in the equation?

then i subtract 8 from both sides

ln x = 17

e^(ln x)= e^17

e cancels out ln leaving with

x=e^17

this is not right the real answer is

x = 8 + e^10 on math-way but how?

thanks

- Pre-calc Solve logarithmic -
**Steve**, Thursday, October 31, 2013 at 5:19amNot even close.

ln√(x-8) = 5

1/2 ln(x-8) = 5

ln(x-8) = 10

x-8 = e^10

x = 8+e^10

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