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    Question

    (m - 4) 2 + (n + 5) 2 + (p -

    3) 2 = 0, then find the value of 2m + 3n - p.
    A -10 Correct Answer Incorrect Answer
    B 10 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D -12 Correct Answer Incorrect Answer

    Solution

    If (m - 4) 2 + (n + 5) 2 + (p - 3) 2 = 0, then (m = 4), (n = -5), and (p = 3).

    So,
    - m - 4 = 0 → m = 4
    - n + 5 = 0 → n = -5
    - p - 3 = 0 → p = 3

    Therefore, required value:
    2(4) + 3(-5) - 3 = 8 - 15 - 3 = -10

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