Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=x^2$, $a^m=x^9$, $a=x$, $a^m/a^n=\frac{28x^9y^{12}}{14x^2y^2}$, $m=9$ e $n=2$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=y^2$, $a^m=y^{12}$, $a=y$, $a^m/a^n=\frac{28x^{7}y^{12}}{14y^2}$, $m=12$ e $n=2$

Applicare la formula: $\frac{ab}{c}$$=\frac{a}{c}b$, dove $ab=28x^{7}y^{10}$, $a=28$, $b=x^{7}y^{10}$, $c=14$ e $ab/c=\frac{28x^{7}y^{10}}{14}$