Question

Общий Корень из 11 - 6 корней из 2х

Answer 1

$\sqrt{11-6\sqrt{2}}=\sqrt{9-6\sqrt{2}+2} =\sqrt{3^{2}-2*3*\sqrt{2}+(\sqrt{2})^{2}}=\\\\=\sqrt{(3-\sqrt{2})^{2}} =|3-\sqrt{2}|=3-\sqrt{2}$