8th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-2

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

    A)  \[-3{{x}^{4}}+5{{x}^{3}}-17x+21\]

    B)  \[{{x}^{5}}+24{{x}^{4}}+5{{x}^{2}}+x+21\]

    C)  \[8{{x}^{5}}+{{x}^{4}}-12+7x+1\]

    D)  \[3{{x}^{5}}-4{{x}^{4}}+1{{x}^{3}}-5{{x}^{2}}-7x+2\]

    E)  None of these

    Correct Answer: A


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