11 b c
Va rog frumos
Va implor
Doar cele doua

[tex]\it b) \\ \\ m_a=\dfrac{x+y}{2} \Rightarrow 18\sqrt2=\dfrac{6\sqrt2+y}{2}\Big|_{\cdot 2} \Rightarrow 36\sqrt2=6\sqrt2+y\Big|_{-6\sqrt2} \Rightarrow y=30\sqrt2[/tex]