Math Problem Statement

What is the polynomial function of least degree whose only zeros are −2, 3, and 4?

Solution

The problem asks for the polynomial function of the least degree whose only zeros are 2-2, 33, and 44. Based on the given options, the structure of the polynomial will be:

f(x)=a(x+2)(x3)(x4)f(x) = a(x + 2)(x - 3)(x - 4)

Since the leading term is given as x3x^3, the constant aa should be 1 (since the highest degree term x3x^3 already matches). Expanding the factors:

(x+2)(x3)(x4)(x + 2)(x - 3)(x - 4)

First, multiply the first two factors:

(x+2)(x3)=x23x+2x6=x2x6(x + 2)(x - 3) = x^2 - 3x + 2x - 6 = x^2 - x - 6

Now, multiply this result by (x4)(x - 4):

(x2x6)(x4)=x34x2x2+4x6x+24(x^2 - x - 6)(x - 4) = x^3 - 4x^2 - x^2 + 4x - 6x + 24

Simplify the terms:

x35x2+10x+24x^3 - 5x^2 + 10x + 24

Thus, the polynomial is:

f(x)=x35x2+10x+24f(x) = x^3 - 5x^2 + 10x + 24

The corresponding values to drag into the boxes are:

  • For x2x^2, the coefficient is 5-5,
  • For xx, the coefficient is +10+10,
  • For the constant term, the value is +24+24.

Let me know if you'd like further details or clarifications!


Here are 5 related questions:

  1. What would the polynomial look like if the zeros were 11, 3-3, and 55?
  2. How do you determine the leading coefficient in a polynomial?
  3. What are the possible degrees for a polynomial with 4 real zeros?
  4. How can you verify the zeros of a polynomial by factoring?
  5. How does the degree of a polynomial affect its end behavior?

Tip: When finding the polynomial from given zeros, always check for the highest-degree term to match the expected degree of the polynomial.

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Math Problem Analysis

Mathematical Concepts

Polynomial Functions
Zeros of a Polynomial

Formulas

Polynomial formation from roots
Expanding binomials

Theorems

Fundamental Theorem of Algebra

Suitable Grade Level

High School