Algebra-1

Question Analysis
This question tests the student's ability to solve a system of linear and quadratic equations algebraically. The student needs to substitute the linear equation into the quadratic equation and solve for .

Key Concept Explanation
The key concept here is the substitution method, where one equation is substituted into the other to form a single equation in one variable.

Step-by-step Solution
1. Substitute into :
2. Rearrange the equation to standard quadratic form:

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