Question

calculati media aritmetica a numerelor reale:x=2(4-v7) si y=2v7

Answer 1

Media armetica=(2(4-√7)+2√7)/2=8-2√7+2√7( 8-2√7+2√7 se elimina ) ) totul supra 2 si ramane 8/2 care da 4
Media armetica = 4 !

Answer 2

$m_a= \frac{2(4- \sqrt{7})+2\sqrt{7}}{2} = \frac{8-2\sqrt{7}+2\sqrt{7}}{2}= \frac{8}{2} =4$