Question: The equation below shows the characteristic equation of a closed-loop control system. Determine its stability status. 1) The system is stable. 2) The system has

 The equation below shows the characteristic equation of a closed-loop control system. Determine its stability status.

s+2s3+s+4s+4=0

1) The system is stable.
2) The system has one unstable root.
3) The system has two unstable roots.
4) The system has three unstable roots.

s+2s3+s+4s+4=0

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