Zeros of a Polynomial

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Taught by mrbrianmclogan
  • Currently 3.0/5 Stars.
7053 views | 1 rating
Meets NCTM Standards:
Errors in this video:

At the 7:50 mark, the instructor forgot the "squared" on the 3x term, when finding f(-x).

Lesson Summary:

In this lesson, we learn about zeros of a polynomial and various methods to find them. The fundamental theorem of algebra and linear factorization theorem are explained. We also learn about the rational root test, Carp's rule of science, and complex conjugates. These methods help us to determine the possible number of real and complex roots of a polynomial, which is essential in solving polynomials of higher degree. The use of graphing calculators and synthetic division is also discussed.

Lesson Description:

Overview of zeros of a polynomial

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Questions answered by this video:
  • How can I find the possible rational roots of a polynomial?
  • How can I find the number of positive or negative real roots of a polynomial?
  • Staff Review

    • Currently 3.0/5 Stars.
    This video shows an overview of finding zeros of a polynomial. It shows how to find the possible rational roots, and the number of positive and negative real roots.