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  3. 8th Class
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8th Class Mathematics Sample Paper Mathematics Sample Paper-5

  • question_answer
    If \[a+\frac{1}{a}=x+y\]and \[a-\frac{1}{a}=x-y,\]then which of the following options is correct?

    A) \[x=y\]             

    B) \[xy=1\]     

    C) \[x+y=0\]        

    D) \[xy=2\]

    E) None of these

    Correct Answer: B

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