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Find the value of x in the equation 3x^2 - 12 = 0.
Practice Questions
Q1
Find the value of x in the equation 3x^2 - 12 = 0.
-2
2
4
0
Questions & Step-by-Step Solutions
Find the value of x in the equation 3x^2 - 12 = 0.
Correct Answer: ±2
Steps
Concepts
Step 1: Start with the equation 3x^2 - 12 = 0.
Step 2: Add 12 to both sides of the equation to get 3x^2 = 12.
Step 3: Divide both sides of the equation by 3 to simplify it. This gives you x^2 = 4.
Step 4: To find x, take the square root of both sides. This means x = ±2.
Quadratic Equations
– The question tests the ability to solve a basic quadratic equation in the form ax^2 + b = 0.
Factoring and Square Roots
– The solution involves factoring and taking square roots to find the values of x.
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