Applicare la formula: $\log_{b}\left(mn\right)$$=\log_{b}\left(m\right)+\log_{b}\left(n\right)$, dove $mn=100x$, $b=10$, $b,mn=10,100x$, $m=x$ e $n=100$

Applicare la formula: $\log_{b}\left(x\right)$$=\log_{b}\left(pfgg\left(x,b\right)\right)$, dove $b=10$ e $x=100$

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