Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=8m^3-12m^2+6m-1$, $b=4m^2-1$, $c=2m^2+m$, $a/b=\frac{8m^3-12m^2+6m-1}{4m^2-1}$, $f=4m^2-2$, $c/f=\frac{2m^2+m}{4m^2-2}$ e $a/bc/f=\frac{8m^3-12m^2+6m-1}{4m^2-1}\frac{2m^2+m}{4m^2-2}$