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If a = 4 and b = 2, what is the value of a^2 + b^2? (2020)

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Question: If a = 4 and b = 2, what is the value of a^2 + b^2? (2020)

Options:

  1. 20
  2. 16
  3. 18
  4. 14

Correct Answer: 20

Exam Year: 2020

Solution: 

a^2 = 16 and b^2 = 4, so 16 + 4 = 20.

If a = 4 and b = 2, what is the value of a^2 + b^2? (2020)

Practice Questions

Q1
If a = 4 and b = 2, what is the value of a^2 + b^2? (2020)
  1. 20
  2. 16
  3. 18
  4. 14

Questions & Step-by-Step Solutions

If a = 4 and b = 2, what is the value of a^2 + b^2? (2020)
  • Step 1: Identify the values of a and b. Here, a = 4 and b = 2.
  • Step 2: Calculate a squared (a^2). This means multiplying a by itself: 4 * 4 = 16.
  • Step 3: Calculate b squared (b^2). This means multiplying b by itself: 2 * 2 = 4.
  • Step 4: Add the results from Step 2 and Step 3 together: 16 + 4 = 20.
  • Exponents – Understanding how to calculate powers of numbers.
  • Basic Arithmetic – Performing addition of numerical values.
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