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Dr. Kat Math Practice
Complex Book 5, Lesson Page 1, Section 4
Recognize the three multiplication notations (×, ·, parentheses) and evaluate expressions involving imaginary numbers and all combinations of positive and negative signs.
Multiplication can be written as ×, ·, or ( ) — all three mean the same operation. The sign rules are: positive × positive = positive, negative × positive = negative, and negative × negative = positive.
5 questions · pace yourself · explanations on every answer