Can you determine without solving the roots that the real parts of all the roots of s4 +14s3 +71s2 +154s+120 are smaller

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answerhappygod
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Can you determine without solving the roots that the real parts of all the roots of s4 +14s3 +71s2 +154s+120 are smaller

Post by answerhappygod »

Can you determine without solving the roots that the real parts of all the
roots of s4 +14s3 +71s2 +154s+120 are smaller that −1? (Hint: Let s = s′ −1.)
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