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    Question

    If 'x' = тИЪ10, then find the value of (x - 1)┬▓ + (x +

    1)┬▓
    A 18 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 24 Correct Answer Incorrect Answer
    D 22 Correct Answer Incorrect Answer

    Solution

    (x - 1)┬▓ + (x + 1)┬▓ = x┬▓ - 2x + 1 + x┬▓ + 2x + 1 = 2x┬▓ + 2 = 2 X (тИЪ10)┬▓ + 2 = 2 X 10 + 2 = 20 + 2 = 22

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