Name the transfer function

Determine the second order transfer function behaviour

G(s) = 200/(s+2+j20)(s+2-j20)

          200
  ---------------
  s^2 + 4 s + 404

 Matlab 2012a
 sys = tf([200],[1 4 404])
 step(sys)

VisSim -simplified model

Step response in VisSim - dominant pole

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MATLAB - Step Response examples

1st  order- Step Response - Example 1 

Settling time example