Question

    The third proportional to (4x² – 4y²) and (2x–2y)

    is:
    A x – y/x + y Correct Answer Incorrect Answer
    B (x – y) Correct Answer Incorrect Answer
    C x + y/x – y Correct Answer Incorrect Answer
    D (x + y) Correct Answer Incorrect Answer

    Solution

    Let the third proportional z. ATQ- (4x² – 4y²) :(2x–2y): (2x–2y): z z × (4x² – 4y²) = (2x–2y) × (2x–2y) =(2x–2y) × (2x–2y) / (4x² – 4y²) =(x-y)/(x+y).

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