Algebra-1

Question Analysis
This question tests the understanding of the range of an even-degree polynomial. It requires the student to determine the minimum value of the polynomial and use it to find the range.

Key Concept Explanation
For even-degree polynomials with a positive leading coefficient, the range is , where is the minimum value of the polynomial.

Step-by-step Solution
1. Identify the given polynomial:
2. Recognize that this is an even-degree polynomial with a positive leading coefficient.
3. Complete the square to find the minimum value:

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