Решите системы уравнений

[tex]\left \{ {{\sqrt[3]{x}-\sqrt[3]{y}=2} \atop {xy=27}} ight. [/tex]


[tex]\left \{ {{\sqrt{x}}+\sqrt{y}= 10 \atop {\sqrt[4]{x}}+\sqrt[4]{y}=4 ight. [/tex]