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7th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-17

  • question_answer
    By how much is \[({{x}^{4}}+9{{x}^{2}}{{y}^{2}}+{{y}^{4}})\] more than \[({{x}^{4}}+6{{x}^{2}}{{y}^{2}}-{{y}^{4}})?\]

    A)  \[-\,3\,{{x}^{2}}{{y}^{2}}+2\,{{y}^{4}}\] 

    B)  \[12\,{{x}^{2}}{{y}^{2}}\]

    C)  \[2\,{{x}^{2}}{{y}^{2}}+{{y}^{4}}\]                    

    D)  \[3\,{{x}^{2}}{{y}^{2}}+2\,{{y}^{4}}\]

    E)  None of these

    Correct Answer: D

    Solution :

     Not Available


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