Khan Academy
Khan Academy: Polynomial Basics: Interesting Polynomial Coefficient Problem
This video demonstrates how to determine the coefficients of a third degree polynomial when given the zeros of the polynomial and the y-intercept.
Khan Academy
Khan Academy: Polynomial Basics: Subtracting Polynomials With Multiple Variables
This video demonstrates how to subtract polynomials when there are multiple variables in each polynomial.
Khan Academy
Khan Academy: Polynomial Basics: Adding and Subtracting Polynomials 3
This video demonstrates how to simplify an expression that involves both addition and subtraction of polynomials.