Răspuns :
[tex]\it MN^2=(x_N-x_M)^2+(y_N-y_M)^2=(\sqrt5-0)^2+(0-\sqrt3)^2=5+3=8\\ \\ \\ MN=\sqrt8=\sqrt{4\cdot2}=2\sqrt2\ u.\ m.[/tex]
[tex]\it MN^2=(x_N-x_M)^2+(y_N-y_M)^2=(\sqrt5-0)^2+(0-\sqrt3)^2=5+3=8\\ \\ \\ MN=\sqrt8=\sqrt{4\cdot2}=2\sqrt2\ u.\ m.[/tex]