Khan Academy: Polynomial Basics: Simplify a Polynomial

Adding two polynomials begins with simplifying when possible. Sal demonstrates the process he uses to combine like terms and explains why the process works. This video would be great for those who need a quick refresher.

At times, polynomial expressions can be very long. Watch this video to see how Sal simplifies them by combining like terms. He explains his process and uses various colors to demonstrate why like terms are alike and why they can be...

This video has a basic example of simplifying a polynomial expression with multiple variables.

This video shows how to write a polynomial expression for a given situation.

This video demonstrates how to write a polynomial that represents the difference between the area of a rectangle of given length and width and the area of a circle with a given diameter.

This video demonstrates how to simplify an expression that involves both addition and subtraction of polynomials.

This video demonstrates how to determine the coefficients of a third degree polynomial when given the zeros of the polynomial and the y-intercept.

This video demonstrates how to subtract polynomials when there are multiple variables in each polynomial.

Continuation of video lesson introducing the basic trigonometric ratios. Examples of finding sine, cosine and tangent for two different right triangles, including finding side lengths by the Pythagorean Theorem and rationalizing the...

Video introducing the basic trigonometry ratios sine, cosine, and tangent. Examples are shown for the two acute angles of a right triangle. Includes link to additional practice problems. [9:17]