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# Complex multiplication [ (a+bi) × (a+bi) ]

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Complex multiplication [ (a+bi) × (a+bi) ]
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The complex algorithm has: addition and subtraction, multiplication and division.

The multiplication of the plural is carried out according to the following rules: Let $$z1=a+bi$$, $$z2=c+di$$(a, b, c, d∈R) be any two plural , then their product $$(a+bi)(c+di)=(ac-bd)+(bc+ad)i$$.

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