polynomial function f are  −9, 8, and −7i.  What is the other zero of f ?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Polynomial Functions
Section3.4: Zeros Of Polynomial Functions
Problem 7ECP: Find the quartic (fourth-degree) polynomial function f with real coefficients that has 1,2and2i, as...
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Three of the zeros of a fourth-degree polynomial function f are 

−9, 8, and −7i.

 What is the other zero of f ?

 
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