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    Question

    Simplify the following expression:     (525

    +175) ² - (525 – 175) ² / (525 × 175)
    A 700 Correct Answer Incorrect Answer
    B 350 Correct Answer Incorrect Answer
    C 2 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer

    Solution

    Let,   a =525 and b =175. (a +b) ² - (a – b) ² / (a × b)      … (1) As we know that – (a +b) ² - (a – b) ² =4 ab Put the value in Equation (1) =4ab /ab =4.

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