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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
Subtracting complex numbers
Subtracting complex numbers
Sal subtracts (6-18i) from (2-3i).
License: CC BY-NC-SA by Khan Academy