What is the complex conjugate of #4i#? Precalculus Complex Zeros Complex Conjugate Zeros 1 Answer Trevor Ryan. Dec 6, 2015 #-4i# Explanation: Any complex number #z=x+iy# has complex conjugate #bar z=x-iy# Hence #bar(0+4i)=0-4i# Answer link Related questions What is a complex conjugate? How do I find a complex conjugate? What is the conjugate zeros theorem? How do I use the conjugate zeros theorem? What is the conjugate pair theorem? How do I find the complex conjugate of #10+6i#? How do I find the complex conjugate of #14+12i#? What is the complex conjugate for the number #7-3i#? What is the complex conjugate of #3i+4#? What is the complex conjugate of #a-bi#? See all questions in Complex Conjugate Zeros Impact of this question 10063 views around the world You can reuse this answer Creative Commons License