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Scorpion4ik [409]
4 years ago
9

Consider the function f(x) = -2x2 +3x-8. Determine f(k+4). Fully simplify your answer.

Mathematics
1 answer:
Vaselesa [24]4 years ago
5 0

Answer:

f(k + 4) = -2k² - 13k - 28

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients
  • Expand by FOIL
  • Functions
  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = -2x² + 3x - 8

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function f(x)]:                                                                           f(k + 4) = -2(k + 4)² + 3(k + 4) - 8
  2. Expand [FOIL]:                                                                                                  f(k + 4) = -2(k² + 8k + 16) + 3(k + 4) - 8
  3. [Distributive Property] Distribute:                                                                    f(k + 4) = -2k² - 16k - 32 + 3k + 12 - 8
  4. Combine like terms:                                                                                         f(k + 4) = -2k² - 13k - 28
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