This video explains adding fractions with unlike denominators. I use this method because the steps in it make adding polynomial fractions with unlike denominators a lot easier. The exact same steps can be used for polynomials (video Fractions Part...
This video checks the solution of the video for solving for x using the quadratic equation. It includes the steps for reducing a root that, when computed, does not come out to be a perfect square, yet must be used in the FOIL method of the polynomial...