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Mathematics Handbook/Multiplication: Difference between revisions

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#a x 0 = 0
#a x 0 = 0
#a x 1 = a
#a x 1 = a
#a x a = <math>a^2</math>
#a x a = a<sup>2</sup>
#a x -a = <math>-a^2</math>
#a x -a = -a<sup>2</sup>
 
{{BookCat}}

Revision as of 18:02, 1 November 2010

Properties

  1. a x b = b x a
  2. a x (b x c) = (a x b) x c


Rules

  1. a x 0 = 0
  2. a x 1 = a
  3. a x a = a2
  4. a x -a = -a2

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