Helpful synthetic division links-
https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/synthetic-division/v/synthetic-division
http://mathworld.wolfram.com/SyntheticDivision.html
Helpful long division links-
https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/dividing_polynomials/v/polynomial-division
http://www.purplemath.com/modules/polydiv2.htm
https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/synthetic-division/v/synthetic-division
http://mathworld.wolfram.com/SyntheticDivision.html
Helpful long division links-
https://www.khanacademy.org/math/trigonometry/polynomial_and_rational/dividing_polynomials/v/polynomial-division
http://www.purplemath.com/modules/polydiv2.htm