This 4 lesson unit is a short exploration of complex numbers and their connections to the zeroes of quadratic functions. The number i is developed along with more general complex numbers. The basic arithmetic of complex numbers (sums, differences, and products only) is explored. Quadratic functions with complex solutions are solved and the discriminant of a quadratic is used to determine characteristics of a quadratic's zeroes.
To access the lesson videos on YouTube use your smartphone or tablet to scan the QR code at the top of each lesson.