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OpenStudy (anonymous):
Find all zeros of x^3-5x^2-7x+51 if 4-i is one of the possible zeros
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OpenStudy (kainui):
It turns out that if a cubic has a complex root, usually its complex conjugate is a root as well. So that leaves you with one real root to find.
OpenStudy (anonymous):
how would you find the other roots? Divide the equation by 4-i?
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