Question

Which of the following numbers is equivalent to √-200?

a. 10√2
b. -10i√2
c. -10√2
d. 10i√2

Answer 1

Answer:

D

Step-by-step explanation:

The i indicates the square root of - 1.

B or D are  the only possible answers. But which one is it? You have to split the numbers apart.

sqrt(-1) * sqrt(200)

i * 10*sqrt(2)

D

The other three are simply incorrect.