Correct answer is B. We can rewrite the expression in the form of 39 - 80i
Any function that goes from complex numbers to complex numbers is said to as complex. It is a function that, in other words, has the complex numbers as a codomain and a subset of the complex numbers as its domain. A nonempty open subset of the complex plane is typically found in the domain of complex functions.
Using (a-b)²= a²-2ab+b²
(8-5i)² = 8²-2(8)(5i)+(5i)²
= 64 - 80i + 25i²
We know that i²=-1
So
= 64 - 80i + 25(-1)
=64 - 25 - 80i
= 39 - 80i
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