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What is the result of (x - 1)(x + 1) when x = 3?

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Question: What is the result of (x - 1)(x + 1) when x = 3?

Options:

  1. 0
  2. 2
  3. 6
  4. 8

Correct Answer: 6

Solution: 

Substituting x = 3, we get (3 - 1)(3 + 1) = 2 * 4 = 8.

What is the result of (x - 1)(x + 1) when x = 3?

Practice Questions

Q1
What is the result of (x - 1)(x + 1) when x = 3?
  1. 0
  2. 2
  3. 6
  4. 8

Questions & Step-by-Step Solutions

What is the result of (x - 1)(x + 1) when x = 3?
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