Question

Cum se afla media geometrica a numerelor : 3+√2  si 3-√2 ?

Answer 1

Mg= radical din a ori b
= radical din: (3+v2)(3-v2)
=radical din: 9-2
=radical din 7

Answer 2

mg=√a·b
a·b=(3+$\sqrt{2}$)·(3-$\sqrt{2}$
a-b=3²-($\sqrt{2}$)²
a·b=9-2
a·b=7⇒mg=$\sqrt{7}$