Applicare la formula: $\frac{a}{b}c$$=\frac{ca}{b}$, dove $a=1$, $b=2$, $c=9$, $a/b=\frac{1}{2}$ e $ca/b=9\cdot \left(\frac{1}{2}\right)\cdot \left(-\frac{2}{19}\right)a^2b^3a^{10}b^{10}$

Applicare la formula: $x^mx^n$$=x^{\left(m+n\right)}$, dove $x=a$, $m=2$ e $n=10$

Applicare la formula: $x^mx^n$$=x^{\left(m+n\right)}$, dove $x=b$, $m=3$ e $n=10$

Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=9$, $b=2$, $c=-2$, $a/b=\frac{9}{2}$, $f=19$, $c/f=-\frac{2}{19}$ e $a/bc/f=\frac{9}{2}\cdot -\frac{2}{19}a^{12}b^{13}$