[tex] \frac{1}{ \sqrt{2} } = \frac{ \sqrt{2} }{2}
[/tex] (am rationalizat)
[tex] \sqrt{8} =2 \sqrt{2} [/tex]
[tex] \frac{ \sqrt{2} }{2} - \frac{5 \sqrt{2} }{2}+2 \sqrt{2} [/tex] (amplificam [tex]2 \sqrt{2} [/tex] cu 2)
⇒[tex] \frac{ \sqrt{2}-5 \sqrt{2}+4 \sqrt{2} }{2} =0[/tex]
Raspunsul este 0.
