\[\boxed{\text{60.\ }\text{ОК\ ГДЗ\ -\ домашка\ на\ 5}}\]
\[x^{2} - x - 240 = 1\]
\[x_{1} + x_{2} = 1;\ \ \ x_{1} \cdot x_{2} = - 240\]
\[x_{1} = 16;\ \ \ x_{2} = - 15\]
\[y_{1} = 16 - 1 = 15;\]
\[y_{2} = - 15 - 1 = - 16.\]
\[Ответ:(16;15);\ \ ( - 15; - 16).\]
\[x^{2} + 4x^{2} - 60x + 225 - 65 = 0\]
\[5x^{2} - 60x + 160 = 0\ \ \ \ \ |\ :5\]
\[x^{2} - 12x + 32 = 0\]
\[D_{1} = 36 - 32 = 4\]
\[x_{1} = 6 + 2 = 8;\ \ \ x_{2} = 6 - 2 = 4.\]
\[y_{1} = 2 \cdot 8 - 15 = 1;\]
\[y_{2} = 2 \cdot 4 - 15 = - 7.\]
\[Ответ:(8;1);\ \ (4; - 7).\]