9. [10%] Find each location of poles \( (\omega{p1}, \omega{p2}) \), zeros \( (\omega{z1}, \omega{z2}) \), and 3-dB low-frequency \( \omega_{t} \) (rad/s) of the low-frequency response of \( L(s) = [s(s + 10)] / [(s + 100)(s + 25)] \)