Question

rút gọn biểu thức
căn 11+6 căn 2-3+ căn 2

Answer 1

\(\sqrt{11+6\sqrt{2}}-3+\sqrt{2}=\sqrt{\left(3+\sqrt{2}\right)^2}-3+\sqrt{2}=3+\sqrt{2}-3+\sqrt{2}=2\sqrt{2}\)

Answer 2

\(\sqrt{11+6\sqrt{2}}-3+\sqrt{2}\)

\(=3+\sqrt{2}-3+\sqrt{2}\)

\(=2\sqrt{2}\)