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Evaluate 8x^2 + 2x + 5, when x =7
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Evaluate 8x^2 + 2x + 5, when x =7

User Emax
by
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1 Answer

9 votes

Answer:

432

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

8x² + 5x + 5

x = 7

Step 2: Evaluate

  1. Substitute in x: 8(7)² + 5(7) + 5
  2. Evaluate exponents: 8(49) + 5(7) + 5
  3. Multiply: 392 + 35 + 5
  4. Add: 427 + 5
  5. Add: 432
User James Irwin
by
5.5k points
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