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What are the roots of the quadratic equation x^2 - 4 = 0?

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Question: What are the roots of the quadratic equation x^2 - 4 = 0?

Options:

  1. -2, 2
  2. 0, 4
  3. 1, -1
  4. 2, -2

Correct Answer: -2, 2

Solution: 

Step 1: Factor the equation: (x - 2)(x + 2) = 0. Step 2: Set each factor to zero: x - 2 = 0 or x + 2 = 0. Step 3: Roots are x = -2 and x = 2.

What are the roots of the quadratic equation x^2 - 4 = 0?

Practice Questions

Q1
What are the roots of the quadratic equation x^2 - 4 = 0?
  1. -2, 2
  2. 0, 4
  3. 1, -1
  4. 2, -2

Questions & Step-by-Step Solutions

What are the roots of the quadratic equation x^2 - 4 = 0?
  • Quadratic Equations – Understanding how to solve quadratic equations using factoring.
  • Factoring – Recognizing how to factor a difference of squares.
  • Roots of Equations – Finding the values of x that satisfy the equation.
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