Упростите выражение: (4m/(m^2-m-6)-10/(m^2-9))∶(2m-4)/(m^2+5m+6)-(17-2m)/(m-3).

\[Дополнительные\ вычисления:\]

\[m_{1} + m_{2} = 1;\ \ m_{1} \cdot m_{2} = - 6\]

\[m_{1} = - 3,\ \ m_{2} = - 2\]

\[m^{2} - m - 6 = (m + 2)(m - 3).\]

\[m_{1} + m_{2} = - 5;\ \ \ \ m_{1} \cdot m_{2} = 6\]

\[m_{1} = - 3,\ \ m_{2} = - 2\]

\[m^{2} + 5m + 6 = (m + 3)(m + 2).\]

\[m_{1} + m_{2} = 5;\ \ m_{1} \cdot m_{2} = 6\]

\[m_{1} = 2,\ \ m_{2} = 3\]

\[m² - 5m + 6 = (m - 2)(m - 3).\]