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If x = 3 and y = 4, what is the value of x² + y²?

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Question: If x = 3 and y = 4, what is the value of x² + y²?

Options:

  1. 25
  2. 20
  3. 15
  4. 12

Correct Answer: 25

Solution: 

x² + y² = 3² + 4² = 9 + 16 = 25.

If x = 3 and y = 4, what is the value of x² + y²?

Practice Questions

Q1
If x = 3 and y = 4, what is the value of x² + y²?
  1. 25
  2. 20
  3. 15
  4. 12

Questions & Step-by-Step Solutions

If x = 3 and y = 4, what is the value of x² + y²?
  • Step 1: Identify the values of x and y. Here, x = 3 and y = 4.
  • Step 2: Calculate x squared (x²). This means multiplying x by itself: 3 * 3 = 9.
  • Step 3: Calculate y squared (y²). This means multiplying y by itself: 4 * 4 = 16.
  • Step 4: Add the results from Step 2 and Step 3 together: 9 + 16 = 25.
  • Basic Algebra – The question tests the ability to perform basic arithmetic operations, specifically squaring numbers and adding them.
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