Math Problem Statement

The graph of a polynomial function y = p(x) is shown. Which of the following expressions could define p(x)?

Solution

To solve the question, we need to analyze the graph and determine the correct polynomial function p(x)p(x).

Step-by-step Analysis:

  1. Roots/Zeros of the Polynomial: The graph crosses the x-axis at x=3x = -3 and x=2x = 2, which means the polynomial must have factors of (x+3)(x + 3) and (x2)(x - 2).

  2. Multiplicity of Roots:

    • The graph touches the x-axis at x=3x = -3 and bounces off at x=2x = 2. This indicates that:
      • At x=3x = -3, the root has even multiplicity (since it just touches the x-axis).
      • At x=2x = 2, the root has even multiplicity as well (since the graph bounces off the x-axis).
  3. Degree of the Polynomial: Based on the shape of the graph (with two turning points), the degree of the polynomial seems to be at least 4.

Matching the Polynomial with the Given Options:

  • From the analysis, the factors are likely (x+3)2(x + 3)^2 and (x2)2(x - 2)^2 because both roots have even multiplicity.

Thus, the correct polynomial expression is:

(x+3)2(x2)2(x + 3)^2(x - 2)^2

Answer:

The correct option is the third one: (x+3)2(x2)2(x + 3)^2(x - 2)^2.

Would you like further details or explanations on any part of this? Here are some related questions to explore:

  1. What is the general form of a polynomial with given roots?
  2. How do multiplicities of roots affect the graph of a polynomial?
  3. What is the significance of turning points in determining the degree of a polynomial?
  4. How can you factor a polynomial given its graph?
  5. What are the characteristics of polynomial graphs with even and odd multiplicity?

Tip: Remember that an even multiplicity causes the graph to touch or bounce off the x-axis, while an odd multiplicity causes it to cross.

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Math Problem Analysis

Mathematical Concepts

Polynomial Functions
Roots and Zeros
Even and Odd Multiplicity

Formulas

p(x) = (x + 3)^2(x - 2)^2

Theorems

Multiplicity Theorem
Fundamental Theorem of Algebra

Suitable Grade Level

Grades 10-12