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If f(x)=8x^2-1 then what is f(2)
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Answer:

f(2) = 31

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Algebra I

Functions

  • Function Notation

Step-by-step explanation:

Step 1: Define

Identify.

f(x) = 8x² - 1

Step 2: Evaluate

  1. Substitute in x [Function f(x)]:                                                                          f(2) = 8(2)² - 1
  2. [Order of Operations] Simplify:                                                                        f(2) = 31
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