Выполните умножение: \(\dfrac{c^2+4c+4}{2c-6} \cdot \dfrac{c^2-9}{5c+10}.\)
\(\dfrac{c^2+5c+6}{10}\)
\(\dfrac{c^3-3}{5}\)
\(\dfrac{c^2-c-6}{10}\)
\(\dfrac{c-6}{10}\)