Question

What is the absolute value of the complex number -4 -square root of 2i

Answer 1

B

Explanation:

The i is not under the square root.

Answer 2

Absolute value is the same as modulus, thus
|-4 -sqrt(2) i |
=sqrt((-4)^2+(-sqrt(2))^2|
=sqrt(16+2)
=sqrt(18) = 4.243 (approx.)