Question

$\sqrt{10+4 \sqrt{6} }$=?
GFCVTBHBEFSJZALJUIHYGXHVDS BNNAZ\,

Answer 1

$\sqrt{10+4\sqrt6}=\sqrt{6+2\cdot 2\cdot\sqrt6+4}=\sqrt{(\sqrt6)^2+2\cdot 2\cdot\sqrt6+2^2}=\sqrt{(\sqrt6+2)^2}=\\=|\sqrt6+2|=\sqrt6+2.$

Green eyes.