C. 8- 6i
(3- i) to the power of 2 (expand the expression)
9- 6 i + i to the power of 2
calculate
9 - 6i - 1
calculate
8- 6i.
A paragraph proof<span> is only a two-column </span>proof<span> written in sentences. </span>
1 1/4
Step-by-step explanation:
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C is the answer.............