Question

a = 2 radical dim 5 +2 si b=2 radical din 5 -2 . Calculati media geometrica a numerelor

Answer 1

A= 2√5 +2
B= 2√5 -2
media geometrica = ?
mg = $\sqrt{2 \sqrt{5}+2 * 2\sqrt{5}-2 }$ = $\sqrt{4 \sqrt5 * \sqrt{5} } } = \sqrt{4 *5} = \sqrt{20}$