[tex]x ^ { 2 } = ( \sqrt { 2 } - 5 ) ^ { 2 }[/tex]
[tex]x^{2}=\left(\sqrt{2}\right)^{2}-10\sqrt{2}+25 [/tex]
[tex]x^{2}=2-10\sqrt{2}+25 [/tex]
[tex]x^{2}=27-10\sqrt{2} [/tex]
[tex]x=5-\sqrt{2} [/tex]
[tex] x=-\left(5-\sqrt{2}\right) [/tex]
[tex]x=5-\sqrt{2}[/tex]
[tex] x=\sqrt{2}-5 [/tex]
Sper ca ti-am fost de folos. Succes!!!
