SOLUTION: n=4; i and 2i are zeros; f(-1)=20

SOLUTION: n=4; i and 2i are zeros; f(-1)=20

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Question 975247: n=4; i and 2i are zeros; f(-1)=20

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
I'm assuming you need real coefficients so you use complex conjugate roots.

When ,

So,

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