What is the complex conjugate of #2 + i#?

1 Answer
Nov 21, 2015

Answer:

#2-i#

Explanation:

Just like the conjugate of #2+x# is #2-x#, the complex conjugate of #2+i# is #2-i#.

To generalize the rule, the complex conjugate of #a+bi# is #a-bi# —the constant stays the same, and it's added to the opposite of the complex number. Super simple!