# How do you find #abs( -4+2i )#?

##### 1 Answer

May 26, 2016

#### Explanation:

We have the complex number

There are two equivalent expressions for the magnitude of an imaginary number, one in terms of the real and imaginary parts and

and another in terms of the complex conjugate

I'm going to use the first expression because it's simpler, in certian cases the 2nd may be more useful.

We need the real part and imaginary parts of