Question

решите уравнение
$x^{2} =( sqrt{7-2 sqrt{6} } * sqrt{7+2 sqrt{6} })$²

Answer 1

$x^{2} = (sqrt{(7-2 sqrt{6})*(7-2 sqrt{6}) }) ^2 x^{2} = (sqrt{49-4*6} )^2 x^{2} =25 x_{1}=-5 x_{2}=5$

Answer 2

спасибо!!