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Which operation obeys it

Exercise and reference answers

Left
Addition
Items
  1. Region
    Addition
    Item
    Zero is identity
  2. Region
    Addition
    Item
    Has a negative
  3. Region
    Multiplication
    Item
    One is identity
  4. Region
    Multiplication
    Item
    Has a reciprocal
  5. Region
    both
    Item
    Commutative
  6. Region
    both
    Item
    Associative
Right
Multiplication
Instructions
Drop each law into the operation it holds for, or the overlap.

Explanation

_Source: syllabus Mathematics, Ch 4 'Complex Numbers and Quadratic Equations'_
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