Algebra-1

Question Analysis
This question tests the understanding of the range of an even-degree polynomial with a positive leading coefficient. The range of such a polynomial is , where is the minimum value of the function.

Key Concept Explanation
For even-degree polynomials with a positive leading coefficient, the graph opens upwards, and the range is from the minimum value to infinity.

Step-by-step Solution
1. Substitute :
Since , becomes , where .
2. Find the vertex of :
For , , . The vertex (minimum point, since ) occurs at: .

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