Applicare la formula: $\frac{a}{b}+\frac{c}{b}$$=\frac{a+c}{b}$, dove $a=p-6$, $b=2$ e $c=-5$

Applicare la formula: $a+\frac{b}{c}$$=\frac{b+ac}{c}$, dove $a=\frac{p-6}{r}$, $b=-5$, $c=p-6$, $a+b/c=\frac{p-6}{r}+\frac{-5}{p-6}$ e $b/c=\frac{-5}{p-6}$

Applicare la formula: $a+\frac{b}{c}$$=\frac{b+ac}{c}$, dove $a=-5$, $b=\left(p-6\right)^2$, $c=r$, $a+b/c=-5+\frac{\left(p-6\right)^2}{r}$ e $b/c=\frac{\left(p-6\right)^2}{r}$

Applicare la formula: $\frac{\frac{a}{b}}{\frac{c}{f}}$$=\frac{af}{bc}$, dove $a=p-11$, $b=2$, $a/b/c/f=\frac{\frac{p-11}{2}}{\frac{\frac{\left(p-6\right)^2-5r}{r}}{p-6}}$, $c=\frac{\left(p-6\right)^2-5r}{r}$, $a/b=\frac{p-11}{2}$, $f=p-6$ e $c/f=\frac{\frac{\left(p-6\right)^2-5r}{r}}{p-6}$