[tex]y= \sqrt{2} ( \sqrt{2} + \frac{1}{ \sqrt{2} } ) \frac{1}{ \sqrt{2} } =\ \textgreater \ \\\\
y= \sqrt{2} ( \frac{2 \sqrt{2}+ \sqrt{2} }{2} ) \frac{1}{ \sqrt{2} } =\ \textgreater \ \\\\
y= \sqrt{2} * \frac{3 \sqrt{2} }2} * \frac{ \sqrt{2} }{2} =\ \textgreater \ \\\\
y= \frac{6 \sqrt{2} }{2} \\\\
y=3 \sqrt{2} [/tex]
