9
QuizMultiple Choice

Multiply and Divide Complex Numbers

Question 9 • CUSD Advanced Math A (5.0)

What is the product of (3 + 5i) and (2 – 6i)?

Answer
A
6 – 30i
B
36 – 8i
C
–24 – 8i
D
–24 – 28i

Explanation

Multiply each term: (3 + 5i)(2 − 6i) = 6 − 18i + 10i − 30i². Since i² = −1, this becomes 6 − 8i + 30 = 36 − 8i, which is choice B.

AI-written and checked against the verified answer.

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