# How do you find the complex conjugate of 2 + 4i?

Nov 21, 2015

$2 - 4 i$
To find a complex conjugate, just flip the sign of the part with the $i$.
The complex conjugate of $2 + 4 i$ is simply $2 - 4 i$.
The general complex conjugate of $a + b i$ is $a - b i$.