Posted by **julie** on Sunday, February 27, 2011 at 9:53pm.

Solve for x: log3(x^2-4)-log3(x+2)=2

- math -
**Reiny**, Sunday, February 27, 2011 at 10:04pm
log3(x^2-4)-log3(x+2)=2

log3 [(x^2-4)/x+2)] = 2

log3 [(x+2)(x-2)/(x+2)] = 2

log3 (x-2) = 2

x-2 = 3^2

x = 11

- math -
**Adam**, Sunday, February 27, 2011 at 10:06pm
log3 (x^2-4) -log3 (x+2)=2

log3 [(x^2-4)/x+2)] = 2

log3 [(x+2)(x-2)/(x+2)] = 2

log3 (x-2) = 2

x-2 = 3^2

x = 11

- Adam - math -
**Reiny**, Monday, February 28, 2011 at 10:42am
Adam, why would you just cut-and-paste my solution and claim it as yours ?

You didn't even bother to fix my error in the 2nd line, where I missed a bracket.

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