Applicare la formula: $\log_{b}\left(mn\right)$$=\log_{b}\left(m\right)+\log_{b}\left(n\right)$, dove $mn=x^2y^5$, $b=10$, $b,mn=10,x^2y^5$, $m=x^2$ e $n=y^5$

Applicare la formula: $\log_{b}\left(x^a\right)$$=a\log_{b}\left(x\right)$, dove $a=2$ e $b=10$

Applicare la formula: $\log_{b}\left(x^a\right)$$=a\log_{b}\left(x\right)$, dove $a=5$, $b=10$ e $x=y$