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August 29, 2015

Homework Help: Algebra

Posted by Joey on Saturday, April 5, 2008 at 4:53pm.

Can someone tell me how they got the answer?

Find a polynomial equation with real coefficients that has the given roots.
4i, sqrt5
my answer: x^4-22x^2+80=0
correct answer: x^4+11x^2-80=0

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