How should I display transfer function as multiplied form?

I've learning about control sytem and want to display transfer funtion 3s+30/s^2+28s to 3(s+1)/s(s+28)

I'm using tf command like tf([3 30],[1 28 0]). What command should I input to display to 3(s+1)/s(s+28)?

[Sanggi Park]

found it! zpk(tf~) is the command i looking for

[Mehmed Saad]

good. Please close the question