Use either form of Green's Theorem to evaluate the following line integral.\\
$\int_C 4x^3y^5 \, dx + 5x^4y^4 \, dy$, C is the triangle with vertices (0,0), (5,0), and (0,3) with counterclockwise orientation\\
$\int_C 4x^3y^5 \, dx + 5x^4y^4 \, dy = ?$\
(Type an exact answer.)