91Ó°ÊÓ

$$ (5.8)^{\log _{5.8} 10+1} $$

$$ \log _{\pi} \tan (0.25 \pi) $$

$$ \log _{3} 27-\log _{\sqrt{3}} 27-\log _{\frac{1}{3}} 27-\log _{\frac{\sqrt{3}}{2}}\left(\frac{64}{27}\right) $$

$$ \left(\log _{\sqrt{5}} \frac{1}{5}\right) \sqrt{\log _{\frac{1}{5}}(5 \sqrt{5})+\log _{\sqrt{5}}(5 \sqrt{5})} $$