Question

Срочно! №922 а,б. смотрите вложения!)

Answer 1

а) $5+\sqrt{y}/5\sqrt{y}+y=5+\sqrt{y}/(5+\sqrt{y})\sqrt{y}=1/\sqrt{y}$

 

 б) $3x-6/\sqrt{x}+\sqrt{2}=3(x-2)/\sqrt{x}+\sqrt{2}=3(\sqrt{x}-\sqrt{2})(\sqrt{x}+\sqrt{2})/\sqrt{x}+\sqrt{2}=3\sqrt{x}-3\sqrt{2}$ или $3(\sqrt{x}-\sqrt{2})$