SOLUTION: Solve and check for extraneous solutions. ln(x^4)=5

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Question 1111454: Solve and check for extraneous solutions.
ln(x^4)=5
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.
ln(x^4) = 5  <==== is equivalent to ====>


x^4 = e%5E5       (1)


The only real solution to the original equation  is  x = root%284%2Ce%5E5%29.


The other three roots of the equation (1),


    x = -root%284%2Ce%5E5%29,  x = i%2Aroot%284%2Ce%5E5%29,  x = -i%2Aroot%284%2Ce%5E5%29


are extraneous for the original equation.