SAT Math Multiple Choice Question 704: Answer and Explanation

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Test Information

Question: 704

14. If Images, which of the following is equivalent to (2 - i)(3 - 2i)?

  • A. 8 - 7i
  • B. 6 + 2i
  • C. 6 - 6i
  • D. 4 - 7i

Correct Answer: D

Explanation:

D

Additional Topics (complex numbers) MEDIUM

(2 - i)(3 - 2i)

FOIL:

6 - 4i - 3i + 2i2

Substitute i2 = -1:

6 - 4i - 3i + 2(-1)

Combine like terms:

4 - 7i

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