Question

How do you find the complex conjugate of `2 - 4i`?

Answer 1

`2+4i`

Explanation:

The complex conjugate of the complex number `a+bi` is simply `a-bi`.

In other words, change the sign of the term with the `i`: if it's positive, make it negative; if it's negative, make it positive.

Thus, the complex conjugate of `2color(red)(-)4i` is `2color(red)(+)4i`.