Math Problem Statement

The graph of a 5th-degree polynomial is shown. Use the Fundamental Theorem of Algebra to determine the number of real and imaginary zeros.

Solution

The graph you have provided represents a 5th-degree polynomial function. Based on the Fundamental Theorem of Algebra, we know that a polynomial of degree nn has exactly nn complex roots (including real and imaginary zeros).

Analyzing the graph:

  • Real zeros are where the graph crosses the x-axis. From the graph, we can see that the polynomial crosses the x-axis once.

    • Therefore, there is 1 real zero.
  • The total number of zeros (real and imaginary) must add up to 5 since it's a 5th-degree polynomial.

    • Since there is 1 real zero, the remaining 51=45 - 1 = 4 zeros must be imaginary.

Conclusion:

  • Number of real zeros: 1
  • Number of imaginary zeros: 4

Would you like a more detailed explanation of this concept? Also, here are some related questions to explore further:

  1. What is the Fundamental Theorem of Algebra?
  2. How do we determine if a polynomial has imaginary roots by looking at the graph?
  3. Why do imaginary zeros always come in pairs for polynomials with real coefficients?
  4. Can a polynomial of odd degree have only imaginary roots?
  5. How can we factor a polynomial to identify its real and imaginary zeros?

Tip: Remember, imaginary roots always occur in conjugate pairs, so the number of imaginary zeros in a polynomial with real coefficients will always be an even number!

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Math Problem Analysis

Mathematical Concepts

Polynomials
Complex Numbers
Zeros of Polynomials

Formulas

Degree of polynomial = number of zeros (real and complex)
Fundamental Theorem of Algebra

Theorems

Fundamental Theorem of Algebra

Suitable Grade Level

Grades 10-12