You can put this solution on YOUR website! solve 2 log3 (x+4)- log3 9=2
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log3 (x+4)^2 - log3 9 = 2
log3 (x+4)^2 - 2 = 2
log3 (x+4)^2 = 0
(x+4)^2 = 3*0
(x+4)^2 - 1 = 0
x^2 + 8x + 15 = 0
(x+5)(x+3) = 0
x= -5 or x = -3
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Both of these are extraneous solutions as you would find
out if your substituted them in the original equation.
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Cheers,
Stan H.