Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

Question #df1ef

1 Answer

Nov 23, 2016

#P(1-3i)=-13-6i#

Explanation:

#P(x)=x^2-5#

#P(1-3i)=(1-3i)^2-5#
#=(1-3sqrt(-1))(1-3sqrt(-1))-5#
#=1-3sqrt(-1)-3sqrt(-1)+9(-1)-5#
#=1-6i-14#
#=-13-6i#

Related questions

See all questions in Complex Number Plane

Impact of this question

1064 views around the world

You can reuse this answer
Creative Commons License