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    Question

    One of the factors of a3 – b3 +

    1 b3 + 3ab is:
    A a – b – 1 Correct Answer Incorrect Answer
    B a + b – 1 Correct Answer Incorrect Answer
    C a² + b² – ab + a – b + 1 Correct Answer Incorrect Answer
    D a² + b² – ab – a + b + 1 Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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