Applicare la formula: $\frac{a^n}{a}$$=a^{\left(n-1\right)}$, dove $a^n/a=\frac{20x^3y^4z^5}{16x^2z}$, $a^n=z^5$, $a=z$ e $n=5$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=x^2$, $a^m=x^3$, $a=x$, $a^m/a^n=\frac{20x^3y^4z^{4}}{16x^2}$, $m=3$ e $n=2$

Applicare la formula: $\frac{ab}{c}$$=\frac{a}{c}b$, dove $ab=20xy^4z^{4}$, $a=20$, $b=xy^4z^{4}$, $c=16$ e $ab/c=\frac{20xy^4z^{4}}{16}$