Factoring Types            Choose one: Common Factors Perfect Squares Difference of Squares Simple Trinomials Trinomials Requiring Decomposition You should have the times tables up to 12 x 12 memorized by now. If not, make that a priority. Many of these questions will be unnecessarily difficult if you don't have the times tables memorized. You might also encounter factoring a 'Sum or Difference of Cubes' in Math 31 or university math. We explain how to do those here. Back to Factoring Menu