4
QuizMultiple Choice

Performing Operations with Complex Numbers — Quiz

Question 4 • Math 4

What is the multiplicative identity of the complex number negative 4 plus 8 i ?

Answer
A
0
B
negative 4 plus 8 i
C
1
D
4 minus 8 i

Explanation

The multiplicative identity is the number that leaves a value unchanged when you multiply by it. For any complex number, multiplying by 1 gives the original number: (−4 + 8i) × 1 = −4 + 8i. Therefore, the multiplicative identity is 1.

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