Question

Tính \(\sqrt{17-\sqrt{33}}.\sqrt{17+\sqrt{33}}\) có kết quả là 

Answer 1

\(\sqrt{17-\sqrt{33}}\cdot\sqrt{17+\sqrt{33}}\)

\(=\sqrt{17^2-\left(\sqrt{33}\right)^2}\)

\(=\sqrt{289-33}=\sqrt{256}=16\)