Algebra-2

Question Analysis
This problem evaluates the student's ability to solve a quadratic equation by completing the square, including the step of dividing by the coefficient of .

Key Concept Explanation
Completing the square involves transforming a quadratic equation into a perfect square trinomial, which can be solved using the square root property. When the coefficient of is not 1, the first step is to divide all terms by this coefficient.

Step-by-step Solution
1. Divide all terms by 3:
2. Move the constant term to the right side:
3. Add to both sides: