Answer
No, complex zeros come with conjugate pairs, meaning there are other zeros $-i,-2i,-3i,-4i$
which gives a total number of degree would be 8, not 4.
Work Step by Step
see above.
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 3 - Review - Exercises - Page 321: 55
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