addition and subtraction
in Algebra 1 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

A complex number z can be written z=x+iy. In the Argand plane the real part (x) is represented by a value on the horizontal x axis and the imaginary part (y) by a value on the vertical axis. So z is the point (x,y). A second point (x1,y1) represents another complex number z1=x1+iy1. Addition is performed by separately adding the relevant coordinates and the point (x+x1,y+y1) represents z+z1. Subtraction is similarly represented, for example, the point (x-x1,y-y1), representing z-z1.

The complex numbers can be regarded as vectors and diagrammatically represented by a line from the origin in the Argand plane to the point (x,y) where z=x+iy. The length of the line, |z| is sqrt(x^2+y^2). The addition and subtraction of complex numbers can be treated similar to addition and subtraction of vectors.

by Top Rated User (1.2m points)

Related questions

1 answer
asked Dec 13, 2013 in Algebra 1 Answers by Sheryl | 728 views
0 answers
asked Mar 28, 2013 in Calculus Answers by anonymous | 857 views
1 answer
asked Mar 16, 2013 in Algebra 1 Answers by bianca8833 Level 1 User (240 points) | 1.4k views
1 answer
asked Mar 7, 2013 in Algebra 1 Answers by anonymous | 810 views
2 answers
asked May 30, 2013 in Pre-Algebra Answers by anonymous | 768 views
1 answer
asked Apr 24, 2013 in Calculus Answers by anonymous | 5.2k views
1 answer
1 answer
asked Nov 12, 2015 in Other Math Topics by anonymous | 705 views
1 answer
asked Jan 17, 2014 in Other Math Topics by smith | 679 views
2 answers
asked Oct 13, 2013 in Algebra 1 Answers by Mea | 1.3k views
1 answer
asked May 20, 2013 in Algebra 2 Answers by anonymous | 666 views
1 answer
asked Feb 28, 2013 in Algebra 1 Answers by anonymous | 669 views
1 answer
asked Oct 13, 2012 in Pre-Algebra Answers by anonymous | 781 views
1 answer
asked Aug 29, 2012 in Algebra 1 Answers by anonymous | 756 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
87,515 questions
100,352 answers
2,420 comments
767,998 users