Question

a=$\sqrt{ (1- \sqrt{2}) ^{2} }$+$\sqrt{ (1+ \sqrt{2}) ^{2} }$
b=$\sqrt{2}$
a)Aratati ca a=2$\sqrt{2}$
b)Media geometrica a lui a si b

Answer 1

$a=|1-\sqrt2|+|1+\sqrt2|=\sqrt2-1+1+\sqrt2=2\sqrt2$

$m_g=\sqrt{2\sqrt2\cdot\sqrt2}=\sqrt4=2$