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7th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-20

  • question_answer
    If \[9{{x}^{2}}+\left( p+20 \right)\,\,xy+49\,{{y}^{2}}\] is a perfect square, then find the value of p.

    A)  49                               

    B)  39

    C)  22       

    D)  19

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available               


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