Question 114854
The Poly f(x)= x^3-ix^2+2ix+2 has the complex
number i as a zero; however, the conjugate 
-i of I is not a zero. Why doesn't this result
contradict the theorem on conjugate pair of Zeroes
of a poly? 


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Because that particular function does not have Real 
Number coefficients; so the complex zeroes do not
have to come in conjugate pairs.
Cheers,
stan H.