The open-loop transfer function of a unity negative feed back control

The open-loop transfer function of a unity negative feed back control system is given by
G(s) = K(s + 2)
(s + 1)(s - 7)

the stability of the open-loop and closed-loop configuration of the system are respectively

stable and stable

unstable and stable

stable and unstable

unstable and unstable

Answer» C. stable and unstable

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The open-loop transfer function of a unity negative feed back control system is given by G(s) = K(s + 2)(s + 1)(s - 7)the stability of the open-loop and closed-loop configuration of the system are respectively

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The open-loop transfer function of a unity negative feed back control system is given by
G(s) = K(s + 2)
(s + 1)(s - 7)

the stability of the open-loop and closed-loop configuration of the system are respectively