Factoring Equivalencies

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