Question

Calculati media geometrica a numerelor reale:
x=6-2√5 si y=2√5+6.
Va rog!!!

Answer 1

mg=√(a·b)

mg=√(6-2√5)·(2√5+6)

mg=√16

mg=4

Answer 2

$m_{g}=\sqrt{(6-2\sqrt5)(2\sqrt5+6)}=\sqrt{(6-2\sqrt5)(6+2\sqrt5)}=\sqrt{36-20}=4$