The quadratic function has x-intercepts at and . What is the value of ?
Answer & Analysis
Analysis
Question Analysis
This question tests the student's ability to identify the x-intercepts from the factored form of a quadratic function and then perform a simple subtraction.
Key Concept Explanation
In the intercept/factored form of a quadratic function, the x-intercepts are given directly by the values of and . The x-intercepts are the points where the parabola crosses the x-axis, i.e., where .
Step-by-step Solution
1. Identify the x-intercepts from the given function: .
2. The x-intercepts are
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