Respuesta :

[tex] \cfrac{\sqrt{5m} }{ \sqrt{5n} }= \cfrac{\sqrt{5m} * \sqrt{5n} }{ \sqrt{5n}* \sqrt{5n} }= \cfrac{\sqrt{25mn} }{ 5n }= \cfrac{5\sqrt{mn} }{ 5n }= \cfrac{\sqrt{mn} }{ n } [/tex]