Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=x^2$, $a^m=x^8$, $a=x$, $a^m/a^n=\frac{-12x^8y^{10}}{-4x^2y^3}$, $m=8$ e $n=2$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=y^3$, $a^m=y^{10}$, $a=y$, $a^m/a^n=\frac{-12x^{6}y^{10}}{-4y^3}$, $m=10$ e $n=3$

Applicare la formula: $\frac{ab}{c}$$=\frac{a}{c}b$, dove $ab=-12x^{6}y^{7}$, $a=-12$, $b=x^{6}y^{7}$, $c=-4$ e $ab/c=\frac{-12x^{6}y^{7}}{-4}$