Applicare la formula: $\frac{a}{b}$$=\frac{a}{b}\frac{radicalfactor\left(b\right)}{radicalfactor\left(b\right)}$, dove $a=6$ e $b=\sqrt{x+y}$

Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=6$, $b=\sqrt{x+y}$, $c=\sqrt{x+y}$, $a/b=\frac{6}{\sqrt{x+y}}$, $f=\sqrt{x+y}$, $c/f=\frac{\sqrt{x+y}}{\sqrt{x+y}}$ e $a/bc/f=\frac{6}{\sqrt{x+y}}\frac{\sqrt{x+y}}{\sqrt{x+y}}$

Applicare la formula: $x\cdot x$$=x^2$, dove $x=\sqrt{x+y}$

Applicare la formula: $\left(x^a\right)^b$$=x$, dove $a=\frac{1}{2}$, $b=2$, $x^a^b=\left(\sqrt{x+y}\right)^2$, $x=x+y$ e $x^a=\sqrt{x+y}$