Together We Can, Juntos Nós Podemos, Juntos Podemos
https://www.khanacademy.org/math/algebra-home/alg-polynomials/alg-factoring-polynomials-common-factors/a/taking-common-factors
https://www.khanacademy.org/math/algebra-home/alg-polynomials/alg-factoring-polynomials-common-factors/v/algebraic-factoring-by-greatest-common-monomial-factor
https://www.khanacademy.org/math/algebra/polynomial-factorization#factoring-quadratics-1
https://www.youtube.com/watch?v=CkDlZ0m6UGY
https://www.khanacademy.org/math/algebra/polynomial-factorization/factoring-quadratics-diff-of-squares/v/difference-of-squares-intro
https://www.youtube.com/watch?v=Touv2APcBRw
https://www.youtube.com/watch?v=bNQY0z76M5A
https://www.youtube.com/watch?v=iulx0z1lz8M
https://www.youtube.com/watch?v=2lbABbfU6Zc
https://www.khanacademy.org/math/algebra2/polynomial-functions/polynomial-end-behavior/v/polynomial-end-behavior
https://www.youtube.com/watch?v=q6vgQEZuNKk