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    Question

    Determine the value (6.375)2┬а-

    (3.125)2┬а
    A 22.465 Correct Answer Incorrect Answer
    B 28.775 Correct Answer Incorrect Answer
    C 30.875 Correct Answer Incorrect Answer
    D 45.875 Correct Answer Incorrect Answer

    Solution

    ATQ,

    We know that (x2 тАУ y2 ) = (x + y) ├Ч (x тАУ y) So, (9.375)2 тАУ (3.125)2 = (6.375 + 3.125) ├Ч (6.375 тАУ 3.125) = (9.5) ├Ч (3.25) = 30.875

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