SOLUTION: log(x+1)+log(x-1)=log(3)
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Question 808530: log(x+1)+log(x-1)=log(3)
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
log(x+1)+log(x-1)=log(3)
:
log((x+1)(x-1)) = log(3)
therefore
(x+1)(x-1) = 3
FOIL
x^2 - x + x - 1 = 3
x^2 - 1 - 3 = 0
x^2 - 4) = 0
Factors to
(x-2)(x+2) = 0
only the positive solution here
x = 2
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