Question

explicit va rog..sa inteleg cum a fost rezolvat

Answer 1

..........................

Answer 2

$log_{x}y+log_{x}z=log_{x}(y\cdot z)\\ \\ log_{x}y-log_{x}z=log_{x}(y:z)\\ \\ \\ \\ log_{3}\frac{18}{5}+log_{3}5-log_{3}2=\\ \\ =log_{3}(\frac{18}{5}\cdot5)-log_{3}2=\\ \\ =log_{3}18-log_{3}2=\\ \\ =log_{3}(18:2)=\\ \\ =log_{3}9=\\ \\ =log_{3}3^{2}=\\ \\ =2log_{3}3=\\ \\ =2\cdot 1=\\ \\ =2$