How can I find poles and zeros of transfer function matrix ?

I have a matrix of transfer funtion of MIMO system and i have to find its poles and zeros

Answer 1

[Azzi Abdelmalek]

Use roots function

Answer 2

[Deniz Canbay]

NO, just roots will not work. I suggest you to read

https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-30-feedback-control-systems-fall-2010/lecture-notes/MIT16_30F10_lec08.pdf