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What is the value of x in the equation 5x^2 - 20 = 0?

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Question: What is the value of x in the equation 5x^2 - 20 = 0?

Options:

  1. x = 0
  2. x = 2
  3. x = -2
  4. x = 4

Correct Answer: x = 2

Solution: 

Add 20 to both sides: 5x^2 = 20. Divide by 5: x^2 = 4. Take the square root: x = ±2.

What is the value of x in the equation 5x^2 - 20 = 0?

Practice Questions

Q1
What is the value of x in the equation 5x^2 - 20 = 0?
  1. x = 0
  2. x = 2
  3. x = -2
  4. x = 4

Questions & Step-by-Step Solutions

What is the value of x in the equation 5x^2 - 20 = 0?
  • Step 1: Start with the equation 5x^2 - 20 = 0.
  • Step 2: Add 20 to both sides of the equation to get 5x^2 = 20.
  • Step 3: Divide both sides by 5 to simplify the equation to x^2 = 4.
  • Step 4: Take the square root of both sides. This gives you x = 2 and x = -2.
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