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    Question

    If f(x) = x² − 4x + 5, find minimum

    value.
    A 1 Correct Answer Incorrect Answer
    C 2 Correct Answer Incorrect Answer
    D 5 Correct Answer Incorrect Answer

    Solution

    ATQ,

    For a parabola ax² + bx + c, min at x = −b/2a = 2. Value = 2² − 8 + 5 = 1.

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