Question: A feedback control system has a characteristic equation s6 + 2s5 + 12s4 + 4s3 + 21s2 + 2s + 10 = 0. Determine whether

A feedback control system has a characteristic equation
s6 + 2s5 + 12s4 + 4s3 + 21s2 + 2s + 10 = 0.
Determine whether the system is stable, and determine the values of the roots.

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