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    Question

    Simplify the following expression: (5x + 7) 2

    ┬а+ (5x тАУ 7) 2 .
    A 2(25x┬▓┬а+ 49) Correct Answer Incorrect Answer
    B 2(25x┬▓ + 7) Correct Answer Incorrect Answer
    C (25x┬▓ + 7) Correct Answer Incorrect Answer
    D (25x┬▓ + 49) Correct Answer Incorrect Answer

    Solution

    (5x + 7) 2 ┬а+ (5x тАУ 7) 2 = 25x 2 ┬а+ 49 + 70x + 25x 2 ┬а+ 49 тАУ 70x

    = 50x 2 ┬а+ 98

    = 2(25x 2 ┬а+ 49)

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