15. Difference of Squares
Video: https://www.youtube.com/watch?v=SnxDj4e8gEc
Another Video: http://www.virtualnerd.com/algebra-1/polynomials-and-factoring/factoring-special-products/difference-square-or-cubes/difference-of-squares-example
Use the Difference of Squares for THIS: http://www.virtualnerd.com/algebra-1/polynomials-and-factoring/special-products/sum-difference-product/rectangle-area-from-binomial-product-problem
Notes: http://www.regentsprep.org/regents/math/algebra/av6/Lfactps.htm
Practice: http://www.mesacc.edu/~scotz47781/mat120/notes/factoring/diff_of_squares/diff_of_squares_practice.html
Copy down Solved Examples: http://www.purplemath.com/modules/specfact.htm
Difference of Squares: https://www.thatquiz.org/tq/practicetest?5xqsrkw1koa
More Difference of Squares: https://www.thatquiz.org/tq/practicetest?4x8vehx4gnm