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What is the value of (−1)² + (−2)²? (2019)

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Question: What is the value of (−1)² + (−2)²? (2019)

Options:

  1. 1
  2. 4
  3. 5
  4. 3

Correct Answer: 5

Exam Year: 2019

Solution: 

(−1)² = 1 and (−2)² = 4, so 1 + 4 = 5.

What is the value of (−1)² + (−2)²? (2019)

Practice Questions

Q1
What is the value of (−1)² + (−2)²? (2019)
  1. 1
  2. 4
  3. 5
  4. 3

Questions & Step-by-Step Solutions

What is the value of (−1)² + (−2)²? (2019)
  • Step 1: Calculate (−1)². This means you multiply −1 by itself: (−1) × (−1) = 1.
  • Step 2: Calculate (−2)². This means you multiply −2 by itself: (−2) × (−2) = 4.
  • Step 3: Add the results from Step 1 and Step 2: 1 + 4 = 5.
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