Question

Fie x=8 supra 2-√2
$fie x = \frac{8}{2 - \sqrt{2 } }$

Answer 1

$x = \frac{8(2 - \sqrt{2 } }{2 - \sqrt{2 } }$
$x = \frac{16 - 8\sqrt{2 } }{4 - 2}$
$x = \frac{16 - 8\sqrt{2 } }{ 2}$
$x = {8 - 8\sqrt{2 } }$