

Chứng minh
A = [tex]\frac{2-\sqrt{2+\sqrt{2+\sqrt{2+\sqrt{2}}}}}{2-\sqrt{24.\sqrt{2+\sqrt{2}}}}[/tex] [tex]< \frac{1}{3}[/tex]
A = [tex]\frac{2-\sqrt{2+\sqrt{2+\sqrt{2+\sqrt{2}}}}}{2-\sqrt{24.\sqrt{2+\sqrt{2}}}}[/tex] [tex]< \frac{1}{3}[/tex]