Question

Calculati media aritmetica si media geometrica a numerelor :
x=7+ 4 radical din 3 ; y=7-4radical din 3

Answer 1

$ma= \frac{7+ 4\sqrt{3}+7-4 \sqrt{3} }{2}= \frac{14}{2}=7$
$mg= \sqrt{(7+4 \sqrt{3})*(7-4 \sqrt{3}) } = \sqrt{7^{2}-4 \sqrt{3}^{2} } = \sqrt{49-48} = \sqrt{1}=1$