SOLUTION: log base 3(5z+5) - Log base 3(z^2-1)=0

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Question 1008878: log base 3(5z+5) - Log base 3(z^2-1)=0
Answer by ikleyn(52858)   (Show Source): You can put this solution on YOUR website!
.
 -  =    -----> 

 =    ----->

 =    ----->

 =    ----->   (factor)   ----->

(z-6)*(z+1) = 0   ----->

 = 6,  = -1.

The root  doesn't suit the original equation (why ?).

The only solution of the original equation is z = 6.


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