\[\boxed{\text{160.}\text{\ }\text{ОК\ ГДЗ\ -\ домашка\ на\ 5}}\]
\[Графики\ имеют\ только\ одну\ \]
\[общую\ точку,\ если\ D = 0:\]
\[2x^{2} - 5x + 6 = x^{2} - 7x + n\]
\[x^{2} + 2x + 6 - n = 0\]
\[D = 1 - (6 - n) = 1 - 6 + n =\]
\[= n - 5\]
\[n - 5 = 0\]
\[n = 5.\]
\[x^{2} + 2x + 6 - 5 = 0\]
\[x^{2} + 2x + 1 = 0\]
\[(x + 1)^{2} = 0\]
\[x = - 1\]
\[y( - 1) =\]
\[= 2 \cdot ( - 1)^{2} - 5 \cdot ( - 1) + 6 =\]
\[= 2 + 5 + 6 = 13\]
\[Общая\ точка:\ \ \ ( - 1;13).\]