Math Problem Statement

What are the zeros of the polynomial function? Select all correct zeros of each function.

Solution

Let's analyze each polynomial function to find its zeros.

1. f(x)=2x(x2)(1x)f(x) = 2x(x - 2)(1 - x)

  • The factors of this function are 2x2x, (x2)(x - 2), and (1x)(1 - x).

  • Setting each factor equal to zero:

    1. 2x=02x = 0x=0x = 0
    2. x2=0x - 2 = 0x=2x = 2
    3. 1x=01 - x = 0x=1x = 1

Thus, the zeros are x=0x = 0, x=1x = 1, and x=2x = 2.

2. f(x)=2(x+1)(x3)(x1)2f(x) = 2(x + 1)(x - 3)(x - 1)^2

  • The factors are 2(x+1)2(x + 1), (x3)(x - 3), and (x1)2(x - 1)^2.

  • Setting each factor equal to zero:

    1. x+1=0x + 1 = 0x=1x = -1
    2. x3=0x - 3 = 0x=3x = 3
    3. (x1)2=0(x - 1)^2 = 0x=1x = 1

Thus, the zeros are x=1x = -1, x=1x = 1 (with multiplicity 2), and x=3x = 3.

3. f(x)=x3(x+2)(x+3)f(x) = x^3(x + 2)(x + 3)

  • The factors are x3x^3, (x+2)(x + 2), and (x+3)(x + 3).

  • Setting each factor equal to zero:

    1. x3=0x^3 = 0x=0x = 0
    2. x+2=0x + 2 = 0x=2x = -2
    3. x+3=0x + 3 = 0x=3x = -3

Thus, the zeros are x=0x = 0, x=2x = -2, and x=3x = -3.

Final Table of Zeros:

Function3-32-21-100112233
2x(x2)(1x)2x(x-2)(1-x)
2(x+1)(x3)(x1)22(x+1)(x-3)(x-1)^2
x3(x+2)(x+3)x^3(x+2)(x+3)

Do you want further details or have any questions?
Here are five related questions:

  1. How does the multiplicity of a zero affect the graph of the polynomial?
  2. What happens to the end behavior of the polynomial as the degree increases?
  3. Can you determine the degree of the polynomial from its factors?
  4. How does factoring help in finding the zeros of a polynomial?
  5. Why do higher-degree terms dominate the behavior of a polynomial?

Tip: When a zero has even multiplicity, the graph touches the x-axis but does not cross it at that point.

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Math Problem Analysis

Mathematical Concepts

Algebra
Polynomial Equations
Zeros of Functions

Formulas

Setting factors of polynomial functions equal to zero to find the roots

Theorems

Factor Theorem
Zero Product Property

Suitable Grade Level

Grades 10-12