[tex]Merhaba,\\ \\ 2.Bolge\ (-,+)\ olacaktir.\\ \\ 2a-12\ \textless \ 0\\ 2a\ \textless \ 12\\ a\ \textless \ 6\\ \\ a-3\ \textgreater \ 0 \\ a\ \textgreater \ 3\\ \\3\ \textless \ a\ \textless \ 6 \\ \\a={4,5}\\ Toplamlari\ 4+5=9\\ \\ Basarilar..[/tex]
