Question

Aflati media aritmetica si media geometrica  a numerelor : 
√√5+2 si √√5-2
Va rog repede !
Multumesc

Answer 1

Mg² = [√(√5 +2)]² - [√(√5 -2)]² = √5 +2 - √5 +2 =4
M = √4 = 2
Ma =[√(√5 +2) + √(√5- 2)] /2

Answer 2

$\sqrt{( \sqrt{ \sqrt{5+2} })X( \sqrt{ \sqrt{5-2} } }$ (media geometrica)=
= (radical din radical se duce) si ramane$\sqrt{(5+2)X(5-2)}$
=$\sqrt{7X3} = \sqrt{21}$sau poti sa mai scrii 3√7.
Media aritmetica. [tex] \sqrt{ \sqrt{5+2} } = \sqrt{ \sqrt{7} } = 7 \\ \sqrt{ \sqrt{5-2} } = \sqrt{ \sqrt{3} } =3 \\ \frac{7+3}{2} = \frac{10}{2}=5 [/tex]