Question

aflati media geometrica si media aritmetica a numerelor: a) (3-√5) la a doua b) (3+√5) la a doua

Answer 1

[tex]mg= \sqrt{(3- \sqrt{5})^{2} (3+\sqrt{5})^{2} }= (3- \sqrt{5}) (3+\sqrt{5})=9-5=4 \\ ma= [(3- \sqrt{5})^{2}+(3+\sqrt{5})^{2}]/2=9-2 \sqrt{5} +5+9+2 \sqrt{5} +5=28[/tex]