Question

Media aritmetica a numerelor a si b stiid ca a= -3 +√11 si b= 3+√11.

Answer 1

$M_a= \frac{a+b}{2} \\ a=-3+ \sqrt{11} \\ b=3+ \sqrt{11} \\ \Rightarrow M_a= \frac{-3+ \sqrt{11}+3+ \sqrt{11} }{2} \\ M_a= \frac{0+ \sqrt{11}+ \sqrt{11} }{2} \\ M_a= \frac{2 \sqrt{11} }{2} (Se \ simplifica \ prin \ 2) \\ \boxed{M_a= \sqrt{11} }.$