Question

Rezolvati ecuatiile :

Answer 1

Răspuns:

$x^{2}$=$\sqrt{(1-\sqrt{2})^{2} }$+$\sqrt{(1+\sqrt{2})^{2} }$

$x^{2}$=$\sqrt{2}$-1+1+$\sqrt{2}$

redu -1 cu +1

$x^{2}$=$\sqrt{2}$+$\sqrt{2}$

$x^{2}$=2$\sqrt{2}$

x=±$\sqrt{2\sqrt{2}$

x=±$\sqrt[4]{8}$