Respuesta :

[tex]\sqrt[]{72}=\sqrt[]{8\cdot9}=\sqrt[]{8}\cdot\sqrt[]{9}=\sqrt[]{4\cdot2}\cdot3=\sqrt[]{4}\cdot\sqrt[]{2}\cdot3=2\cdot3\cdot\sqrt[]{2}=6\sqrt[]{2}[/tex]

the correct answer is A