Math Problem Statement

Question content area top Part 1 Analyze the polynomial function ​f(x)equals​(xplus6​)squared​(2minus​x) Determine the end behavior of the graph of the function. The graph of f behaves like yequals

enter your response here for large values of StartAbsoluteValue x EndAbsoluteValue.

Solution

We are given the polynomial function:

f(x)=(x+6)2(2x)f(x) = (x + 6)^2(2 - x)

Step 1: Determine the degree of the polynomial

To analyze the end behavior, we need to first expand the polynomial to understand its leading term.

  • (x+6)2=x2+12x+36(x + 6)^2 = x^2 + 12x + 36
  • Now, multiply this with (2x)(2 - x): f(x)=(x2+12x+36)(2x)f(x) = (x^2 + 12x + 36)(2 - x)

Expanding the product:

f(x)=(x2)(2x)+(12x)(2x)+(36)(2x)f(x) = (x^2)(2 - x) + (12x)(2 - x) + (36)(2 - x)

Distribute each term:

f(x)=2x2x3+24x12x2+7236xf(x) = 2x^2 - x^3 + 24x - 12x^2 + 72 - 36x

Simplify the expression:

f(x)=x3+2x236x+72f(x) = -x^3 + 2x^2 - 36x + 72

Step 2: Analyze the leading term for end behavior

The term with the highest degree is x3-x^3. The degree of the polynomial is 3, and the leading coefficient is 1-1.

Step 3: End behavior

For large values of x\lvert x \rvert (as xx \to \infty or xx \to -\infty), the behavior of the graph is dominated by the leading term x3-x^3.

  • As xx \to \infty, x3-x^3 \to -\infty, so f(x)f(x) \to -\infty.
  • As xx \to -\infty, x3-x^3 \to \infty, so f(x)f(x) \to \infty.

Thus, the graph of f(x)f(x) behaves like y=x3y = -x^3 for large values of x\lvert x \rvert.

Final Answer:

The graph of f(x)f(x) behaves like y=x3y = -x^3 for large values of x\lvert x \rvert.

Would you like to see more details, or have any questions about this?

Here are five related questions to extend your understanding:

  1. How do you find the roots of a polynomial function like this one?
  2. What does the degree of a polynomial tell us about the shape of its graph?
  3. How can we find the turning points of a polynomial function?
  4. How do the coefficients of a polynomial affect its graph?
  5. What role does symmetry play in the graph of polynomial functions?

Tip: Always check the leading term of a polynomial for an indication of the end behavior of its graph.

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Math Problem Analysis

Mathematical Concepts

Polynomial Functions
End Behavior
Leading Term
Degree of Polynomials

Formulas

(x + 6)^2 = x^2 + 12x + 36
f(x) = (x^2 + 12x + 36)(2 - x)
End Behavior: Leading term determines behavior for large |x| values

Theorems

End Behavior Theorem: The degree and leading coefficient of a polynomial determine its end behavior.

Suitable Grade Level

Grades 10-12