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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
Precalculus (Eureka Math/EngageNY)
Module 1: Complex numbers and transformations
Topic A: Lessons 1-6: Complex numbers review
Multiplying complex numbers
Multiplying complex numbers
Sal multiplies (1-3i) by (2+5i).
License: CC BY-NC-SA by Khan Academy