Algebra-1

Question Analysis
This question tests the student's ability to solve a quadratic equation when the linear coefficient is zero. The equation is in the form , and the student needs to isolate the quadratic term and take the square root of both sides.

Key Concept Explanation
The key concept here is that when the linear coefficient is zero, the equation simplifies to . Solving this involves isolating and then taking the square root of both sides.

Step-by-step Solution
1. Start with the given equation: .
2. Add 392 to both sides to isolate the quadratic term:

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