Respuesta :
[tex]\begin{gathered} 4\text{ }\times\sqrt[]{10}\text{ }\times\text{ 2 }\times\sqrt[]{20}\text{ } \\ 4\text{ }\times\sqrt[]{10}\text{ }\times\text{ 2}\times\sqrt[]{4\times5} \\ 4\times\sqrt[]{10}\text{ }\times2\text{ }\times2\times\sqrt[]{5} \\ 4\times2\times2\times\sqrt[]{10\times5} \\ 16\sqrt[]{50}\text{ = 16}\sqrt[]{25\times2} \\ \text{ = 16}\times5\times\sqrt[]{2} \\ \text{ = 80}\sqrt[]{2} \end{gathered}[/tex]
