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What is the conjugate of the product (2 + i)(3 − i)?
A7 − i
B7 + i
C6 − i
D5 − 2i
Answer & Solution
Correct answer: A. 7 − i
The product is 6 − 2i + 3i − i² = 7 + i, whose conjugate is 7 − i.
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