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OpenStudy (anonymous):
Using the given zero, find all other zeros of f(x). -2i is a zero of f(x) = x4 - 45x2 - 196
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OpenStudy (anonymous):
factor
OpenStudy (anonymous):
\[(x^2+4)(x^2-49)\] etc
OpenStudy (anonymous):
so i would get x=-2 and x=7?
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