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    Question

    If x − 1/x = 4, find x² +

    1/x²
    A 18 Correct Answer Incorrect Answer
    B 23 Correct Answer Incorrect Answer
    C 33 Correct Answer Incorrect Answer
    D 10 Correct Answer Incorrect Answer

    Solution

    Given x − 1/x = 4 Square both sides: (x − 1/x)² = 16 x² + 1/x² − 2 = 16 x² + 1/x² = 18

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