\[4(c - 3)^{2} - (2c - 7)(7 + 2c) =\]
\[= 4\left( c^{2} - 6c + 9 \right) - 4c^{2} + 49 =\]
\[= 4c^{2} - 24c + 36 - 4c^{2} + 49 =\]
\[= - 24c + 85.\]