c: Ta có: \(\sqrt{\left(2-\sqrt{3}\right)^2}+2\sqrt{4-2\sqrt{3}}\)
\(=2-\sqrt{3}+2\sqrt{3}-2\)
\(=\sqrt{3}\)
e: Ta có: \(\left(5\sqrt{200}-3\sqrt{450}+2\sqrt{50}\right):\sqrt{10}\)
\(=\left(50\sqrt{2}-45\sqrt{2}+10\sqrt{2}\right):\sqrt{10}\)
\(=15\sqrt{2}:\sqrt{10}\)
\(=3\sqrt{5}\)
Đúng 1
Bình luận (0)