Factoring Equivalencies

Chapter 4 - Algebra Reference

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Factoring Identities :

 

  1. a2 - b2 = (a + b) (a - b)

  2. a2 + 2ab + b2 = (a + b) (a + b)

  3. a2 - 2ab + b2 = (a - b) (a - b)

  4.  a3 + b3 = (a+b) (a2 - ab + b2)

  5.  a3 - b3 = (a-b) (a2 + ab + b2)

  6. (a + b)3 = a3 + 3a2b + 3ab2 + b3

  7. (a - b)3 = a3 - 3a2b + 3ab2 - b3