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GeoGebraGeoGebra Classroom

Exploring subtraction of Complex numbers

Drag points A and B around the complex plane. Point C is the difference A – B. After you explore a bit, answer the following questions and be ready to share with the group. How should A and B be situated so that...
  1. C is on the Real axis?
  2. C is on the Imaginary axis?
  3. C is at the Origin?
Be sure to place both A and B on the Real axis. Note what you observe!
A different view of subtraction.