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Ajutor la mate va rog urgent....

Ajutor La Mate Va Rog Urgent class=

Răspuns :

[tex]1)\log_3\sqrt[5]{81}=\log_381^{\frac{1}{5}}=\frac{1}{5}\cdot \log_3 3^4=\boxed{\frac{4}{5}}\\ 2)\log _23+\log _2\frac{1}{3}=\log_2 3\cdot \frac{1}{3}=\log _2 1=\boxed{0}[/tex]