Transfer Functions and Pole Zero forms

I have a question that says:

A system has the transfer function

G1(s) = (k1)^2/(s^2+2(k2)s+(k1)^2

Where k1 = 9 and k2 = 1

The tells me to write this transfer form into polynomial form and pole-zero form

I substitued the k1 and k2 into the equation to get

G1(s) = 81/(s^2+2s+81)

I think that is the polynomial form, Im just struggling on putting it into pole-zero form

Any help will be much appreciated

Kind regards,

James

Answer 1

[Star Strider]

The Control System Toolbox tf and zpk functions could be helpful.