8th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-5

  • question_answer
    The product of\[(5{{x}^{2}}+3{{y}^{2}})\] and \[(8{{x}^{2}}+7{{y}^{2}})\]is:

    A)  \[25{{x}^{3}}+59{{x}^{2}}{{y}^{3}}+21{{y}^{4}}\]

    B)  \[15{{x}^{3}}+59{{x}^{5}}{{y}^{2}}+21{{y}^{4}}\]

    C)  \[40{{x}^{5}}+55{{x}^{2}}{{y}^{3}}+21{{y}^{4}}\]

    D)  \[40{{x}^{4}}+59{{x}^{2}}{{y}^{2}}+21{{y}^{4}}\]

    E)  None of these                

    Correct Answer: D


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