Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=x^3$, $a^m=x^5$, $a=x$, $a^m/a^n=\frac{18x^5y^8z^4}{-9x^3y^5z^2}$, $m=5$ e $n=3$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=y^5$, $a^m=y^8$, $a=y$, $a^m/a^n=\frac{18x^{2}y^8z^4}{-9y^5z^2}$, $m=8$ e $n=5$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=z^2$, $a^m=z^4$, $a=z$, $a^m/a^n=\frac{18x^{2}y^{3}z^4}{-9z^2}$, $m=4$ e $n=2$

Applicare la formula: $\frac{ab}{c}$$=\frac{a}{c}b$, dove $ab=18x^{2}y^{3}z^{2}$, $a=18$, $b=x^{2}y^{3}z^{2}$, $c=-9$ e $ab/c=\frac{18x^{2}y^{3}z^{2}}{-9}$