Giải phương trình: $$\left(9^x-2\times3^x-3\right)\log_3\left(x-1\right)+\log_{\frac{1}{3}}27=\dfrac{2}{3}\times9^{\frac{x+1}{x}}-9^x$$
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Posted 09-05-2014 - 11:20
Alexman113
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