Sums and Differences of Cubes

Skill Sheet 

Sums and Differences of Cubes

Example of sum of cubes:

(x³+216) …… a is x and b is 6……. so, you can factor this into (x+6)(x²-6x+36)


Example of difference of cubes:

(8x³+27)…….a is 2x and b is 3…..so, this can be factored into (2x-3)(4x²+6x+9)

[TIP:  It would be great to have the formulas for sum and differences of cubes in your mental mathematical toolbox!]