What is the multiplicative identity of the complex number -4+ 8i?
a. 0
b. 1
c. -4+8i
d. 4+8i

Option 'B' is correct.

Step-by-step explanation:

Since we know that

Multiplicative identity of any number is the number such that if we multiply any number by it , the result will be the same.

i.e.

Similarly,

So, Option 'B' is correct .

1 is the multiplicative identity of the complex number -4+8i.

the square root of what number? if you add that, then someone will probably answer the question.