algebra solving log equations
posted by Marcos .
n sqrt(x-8)= 5
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
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
this is not right the real answer is
x = 8 + e^10 on math-way but how?
algebra solving log equations -
Ln sqrt(x-8) = 5
e^5 = sqrt(x-8)
Square both sides:
e^10 = x-8
X = 8 + e^10