12
QuizMultiple Choice

Powers and Roots of Complex Numbers — Unit test

Question 12 • Precalculus

Which number represents the sum of –8 and –i?

Answer
A
8i
B
–8i
C
–8 – i
D
–8 + i

Explanation

Add the two terms: the real number −8 and the imaginary number −i. Since they are unlike terms, they do not combine, so the sum is −8 − i. Choice C gives this sum.

AI-written and checked against the verified answer.

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