Khan Academy: Divide Polynomials With Remainders

Rewrite rational expressions of the form a(x)/b(x), where a(x) and b(x) are polynomials, in the form q(x)+r(x)/b(x), where q(x) and r(x) are polynomials and the degree of r(x) is less than the degree of b(x). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.