Khan Academy: Algebra: Factor Polynomials Using the Gcf

Tiles are not just for algebra—see how they can help with multiplication too. Young mathematicians learn to use algebra tiles to model the multiplication of polynomials. A follow-up worksheet provides practice with the skill.

Sal completes a practice problem to reinforce and apply the concepts learned in previous Khan videos on multiplying polynomials. This would be a great practice problem to do with your students.

Video explains how to use the factor by grouping method to factor trinomials completely. Three different examples of trinomials with leading coefficients other than 1 are solved. One example involves first factoring out a greatest common...

Video demonstrates how to use polynomial multiplication to write a polynomial expression that represents the total area of a glass door. The problem requires multiplication of binomials. [4:48]

Video demonstrates how to use the FOIL method to multiply two binomials and shows that it is the same as just applying the distributive property. Practice problems available. [4:32]

Demonstrates how to subtract one polynomial from another polynomial by adding the opposite of the second polynomial. [2:07]

Demonstrates how to subtract polynomials when there are multiple variables in each polynomial. [2:10]

Video shows how to use polynomial multiplication to find the volume of a cylinder of given dimensions. The problem requires multiplying a binomial and a trinomial. [4:19]

Video demonstrates how to determine the coefficients of a third degree polynomial when given the zeros of the polynomial and the y-intercept. [16:15]

Polynomial identities are equations that are true for all possible values of the variable. This introduction video gives more examples of identities and discusses how we prove an equation is an identity. [4:56]