8th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-16

  • question_answer
    The value of \[{{a}^{3}}-3\sqrt{3}\,{{b}^{3}}\]is:

    A) \[(a+b\sqrt{3)}\,\,({{a}^{2}}-ab\sqrt{3}+3{{b}^{2}})\]

    B) \[(a-b\sqrt{3)}\,\,({{a}^{2}}+ab\sqrt{3}+3{{b}^{2}})\]

    C)  \[(a-b\sqrt{3)}\,\,({{a}^{2}}-ab\sqrt{3}+3{{b}^{2}})\]

    D)  \[(a-b\sqrt{3)}\,\,({{a}^{2}}+3ab+3{{b}^{2}})\]

    E)  None of these

    Correct Answer: B


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