Math Problem Statement

Evaluate f(x - 2) when f(x) = -3x^2 - 4x - 4.

Solution

You want to evaluate f(x2)f(x - 2) given that f(x)=3x24x4f(x) = -3x^2 - 4x - 4.

To find f(x2)f(x - 2), we substitute x2x - 2 for xx in the function: f(x2)=3(x2)24(x2)4f(x - 2) = -3(x - 2)^2 - 4(x - 2) - 4

Expanding and simplifying the expression: (x2)2=x24x+4(x - 2)^2 = x^2 - 4x + 4 3(x24x+4)=3x2+12x12-3(x^2 - 4x + 4) = -3x^2 + 12x - 12 4(x2)=4x+8-4(x - 2) = -4x + 8 f(x2)=3x2+12x124x+84=3x2+8x8f(x - 2) = -3x^2 + 12x - 12 - 4x + 8 - 4 = -3x^2 + 8x - 8

Thus, f(x2)=3x2+8x8f(x - 2) = -3x^2 + 8x - 8.

Would you like to know more details about any step in this solution or have other questions?

Here are some related questions you might consider:

  1. How do you find the derivative of f(x)f(x)?
  2. What are the roots of the function f(x)f(x)?
  3. How would you sketch the graph of f(x)f(x)?
  4. What is the vertex of the parabola described by f(x)f(x)?
  5. How do you integrate the function f(x)f(x)?

Tip: Always double-check your substitutions and simplifications when dealing with functions to avoid common algebraic errors.

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Math Problem Analysis

Mathematical Concepts

Algebra
Function Substitution
Quadratic Functions

Formulas

Quadratic expansion: (x - a)^2 = x^2 - 2ax + a^2
Function substitution f(x - a)

Theorems

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Suitable Grade Level

Grades 9-11