What is the conjugate of #sqrt(-20)#?
1 Answer
Nov 21, 2016
Explanation:
Given a complex number
Given a real number
note that
Putting these facts together, we have the conjugate of
#=bar(0+sqrt(20)i)#
#=0-sqrt(20)i#
#=-sqrt(20)i#
#=-2sqrt(5)i#