Question

помогите пожалуйста , две буквы на картинке

Answer 1

$1)\sqrt{9-6\sqrt{2}}=\sqrt{6-6\sqrt{2}+3 }=\sqrt{(\sqrt{6})^{2} -2*\sqrt{6}*\sqrt{3}+(\sqrt{3})^{2}} =\sqrt{(\sqrt{6}-\sqrt{3})^{2}} =\\\\=|\sqrt{6}-\sqrt{3}|=\sqrt{6}-\sqrt{3}\\\\\\2)\sqrt{27+10\sqrt{2}}=\sqrt{2+10\sqrt{2}+25}=\sqrt{(\sqrt{2})^{2}+2*\sqrt{2}*5+5^{2}}=\sqrt{(\sqrt{2} +5)^{2}}=\\\\=|\sqrt{2} +5|=\sqrt{2}+5$