Applicare la formula: $\frac{a}{b}$$=\frac{a}{b}\frac{radicalfactor\left(b\right)}{radicalfactor\left(b\right)}$, dove $a=3x$ e $b=\sqrt{2x+1}$

Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=3x$, $b=\sqrt{2x+1}$, $c=\sqrt{2x+1}$, $a/b=\frac{3x}{\sqrt{2x+1}}$, $f=\sqrt{2x+1}$, $c/f=\frac{\sqrt{2x+1}}{\sqrt{2x+1}}$ e $a/bc/f=\frac{3x}{\sqrt{2x+1}}\frac{\sqrt{2x+1}}{\sqrt{2x+1}}$

Applicare la formula: $x\cdot x$$=x^2$, dove $x=\sqrt{2x+1}$

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