Answer:
-4 - 3i
Explanation:
If a zero of a function is a+bi, there is at least one other zero, a-bi, called the conjugate.
The conjugate of the complex root must also be a zero of the function if the complex root is already a zero.
Conjugate of -4 + 3i is -4 - 3i.
Hence -4 - 3i is also a zero of the function.
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