9
AssignmentMultiple Choice

Complex Numbers

Question 9 • Algebra III A

What is the additive inverse of –2 + 8i?

Answer
A
2 + 8i
B
–2 – 8i
C
2 – 8i
D
–2 + 8i

Explanation

The additive inverse of a number is what you add to it to get 0, so change the sign of each part of –2 + 8i. This gives 2 – 8i, since (–2 + 8i) + (2 – 8i) = 0. The correct choice is 2 – 8i.

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