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Consider the function f(x) = 8x2 + 5x – 2.

Determine the output produced by the input value x = -2.

Consider the function f(x) = 8x2 + 5x – 2. Determine the output produced by the input-example-1

1 Answer

6 votes

Answer:

f(-2) = 20

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

Explanation:

Step 1: Define

f(x) = 8x² + 5x - 2

x = -2

Step 2: Evaluate

  1. Substitute in x: f(-2) = 8(-2)² + 5(-2) - 2
  2. Exponents: f(-2) = 8(4) + 5(-2) - 2
  3. Multiply: f(-2) = 32 - 10 - 2
  4. Subtract: f(-2) = 22 - 2
  5. Subtract: f(-2) = 20
User Jelissa
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