Question

Cum se calculeaza media aritmetica a numerelor √2,√50,√18?

Answer 1

√50=√2*25=5√2
√18=√2*9=3√2
Ma=(√2+5√2+3√2)/3=√2*(1+5+3)/3=3√2

Answer 2

$x=\sqrt2; \ \ y=\sqrt{50}; \ \ z=\sqrt{18}; \\ y=\sqrt{50}=5\sqrt2; \\ z=\sqrt{18}=3\sqrt{2}; \\ M_a=\frac{x+y+z}{3}=\frac{\sqrt2+5\sqrt{2}+3\sqrt{2}}{3}=\frac{9\sqrt{2}}{3}=\boxed{\bold{3\sqrt{2}}}$