What are the equations to sum of cubes, difference of cubes, and difference of squares?

Sum of Cubes:

a³ + b³ = (a + b)(a² - ab + b²)

Example: x³ + 8 → a=x, b=2

                         = (x + 2)(x² - 2x + 4)

Difference of Cubes:

a³ - b³ = (a - b)(a² + ab + b²)

Example: x³ - 27 → a=x, b=3

                         = (x - 3)(x² + 3x + 9)

Difference of Squares:

a² - b² = (a - b)(a + b)

Example: x² - 16 → a=x, b=4

                           = (x - 4)(x + 4)

answer:      

step-by-step explanation: