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Answer:

f'(2) = 8

General Formulas and Concepts:

Pre-Algebra

  • Order of Operations: BPEMDAS

Calculus

The definition of a derivative is "the slope of the tangent line".

Derivatives of constants are 0.

Basic Power Rule:

  • f(x) = cxⁿ
  • f’(x) = c·nxⁿ⁻¹

Step-by-step explanation:

Step 1: Define

f(x) = 3x² - 4x + 2

Step 2: Find 1st Derivative

  1. Basic Power Rule:                    f'(x) = 2·3x²⁻¹ - 1·4x¹⁻¹
  2. Simplify:                                    f'(x) = 6x - 4

Step 3: Find tangent slope

  1. Define:                    f'(x) = 6x - 4, x = 2
  2. Substitute:              f'(2) = 6(2) - 4
  3. Multiply:                  f'(2) = 12 - 4
  4. Subtract:                 f'(2) = 8

Step 4: Identify

f'(2) = 8 tells us that at x = 2, the slope of the tangent line is 8.