Salut,
[tex]\dfrac{5\sqrt6\cdot 2\sqrt{15}}{15\sqrt5}=\dfrac{5\sqrt2\cdot \sqrt3\cdot 2\sqrt3\cdot \sqrt5}{3\cdot 5\sqrt5}=\\\\\\=\dfrac{2\sqrt2\cdot (\sqrt3)^2\cdot 5\sqrt5}{3\cdot 5\sqrt5}=\dfrac{2\sqrt2\cdot 3}{3}=2\sqrt2.[/tex]
Ai înțeles rezolvarea ?
Green eyes.
