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Simplify: 5 + 2 × (3^2 - 1)

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Question: Simplify: 5 + 2 × (3^2 - 1)

Options:

  1. 10
  2. 12
  3. 14
  4. 16

Correct Answer: 12

Solution: 

First, calculate the exponent: 3^2 = 9. Then, solve inside the parentheses: 9 - 1 = 8. Next, multiply: 2 × 8 = 16. Finally, add: 5 + 16 = 21.

Simplify: 5 + 2 × (3^2 - 1)

Practice Questions

Q1
Simplify: 5 + 2 × (3^2 - 1)
  1. 10
  2. 12
  3. 14
  4. 16

Questions & Step-by-Step Solutions

Simplify: 5 + 2 × (3^2 - 1)
  • Order of Operations – Understanding and applying the correct sequence of operations (PEMDAS/BODMAS) to simplify expressions.
  • Exponents – Calculating powers and understanding their role in expressions.
  • Basic Arithmetic – Performing addition, subtraction, and multiplication correctly.
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