Applicare la formula: $\log_{b}\left(\frac{x}{y}\right)$$=\log_{b}\left(x\right)-\log_{b}\left(y\right)$, dove $b=10$, $x=\sqrt{y}z^4$ e $y=x$

Applicare la formula: $\log_{b}\left(mn\right)$$=\log_{b}\left(m\right)+\log_{b}\left(n\right)$, dove $mn=\sqrt{y}z^4$, $b=10$, $b,mn=10,\sqrt{y}z^4$, $m=\sqrt{y}$ e $n=z^4$

Applicare la formula: $\log_{b}\left(x^a\right)$$=a\log_{b}\left(x\right)$, dove $a=\frac{1}{2}$, $b=10$ e $x=y$

Applicare la formula: $\log_{b}\left(x^a\right)$$=a\log_{b}\left(x\right)$, dove $a=4$, $b=10$ e $x=z$