SOLUTION: Solve for x. log3 (x+4) + log3 (x-4) = 1 Check the validity of each solution in the original equation.

Algebra ->  Inverses -> SOLUTION: Solve for x. log3 (x+4) + log3 (x-4) = 1 Check the validity of each solution in the original equation.       Log On


   

Question 437729: Solve for x.
log3 (x+4) + log3 (x-4) = 1
Check the validity of each solution in the original equation.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for x.
log3 (x+4) + log3 (x-4) = 1
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log3(x^2-16) = 1
x^2-16 = 3
x^2 = 19
Positive solution:
x = sqrt(19)
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Cheers,
Stan H.
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