- Subject:
- Mathematics
- Material Type:
- Module
- Provider:
- Ohio Open Ed Collaborative
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- License:
- Creative Commons Attribution-NonCommercial 4.0
- Language:
- English
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# Chapter 3.4 - Exercises

# Khan Academy - Fundamental Theorem of Algebra

# Fundamental Theorem of Algebra

# Section 1: Complex Zeros and Fundamental Theorem of Algebra

In this module we will learn about the **Fundamental Theorem of Algebra** which states that a polynomial of degree n with complex coefficients has at least one complex zero. When this result is applied repeatedly, we get the **Complex Factorization Theorem **which states that a degree n polynomial has exactly n complex zeros including multiplicity. Thus, we note that a polynomial of degree n can be written as a product of n complex linear factors including multiplicity. We will see that complex zeros occur in conjugate pairs. Further, a degree n polynomial with real coefficients can be written as a product of linear factor and irreducible quadratic factors

**Learning Objectives:**

- Complex numbers, magnitude and arithmetic including addition, subtraction, multiplication and division.
- Apply Complex Factorization Theorem to find all zeros of a polynomial
- Apply Real Factorization Theorem to find all zeros of a polynomial