Question

x=$\frac{1}{ \sqrt{2}-1 } + \frac{1}{ \sqrt{2}+1 }$
y=$\sqrt{2} * ( \sqrt{2} + \frac{1}{ \sqrt{2} } )$
Aratati ca: x$( \sqrt{8} + \sqrt{5} )=4$
si calculati $x^{2} - y$

Answer 1

r.................................