8th Class Mathematics Exponents and Power Question Bank Exponents and Powers

  • question_answer
    The product of \[\sqrt[3]{2}\times \sqrt[4]{3}\] is given

    A)  \[\sqrt{10}\]                             

    B)  1            

    C)  \[\sqrt[12]{432}\]  

    D)  \[\sqrt{201}\]

    Correct Answer: C

    Solution :

    (c) \[{{2}^{\frac{1}{3}}}\times {{3}^{\frac{1}{4}}}={{2}^{\frac{1}{3}\times \frac{1}{4}\times 4}}\times {{3}^{\frac{1}{4}\times \frac{1}{3}\times 3}}\] \[={{\left( {{2}^{4}} \right)}^{\frac{1}{12}}}\times {{\left( {{3}^{3}} \right)}^{\frac{1}{12}}}\] \[={{\left[ {{2}^{4}}\times {{3}^{3}} \right]}^{\frac{1}{12}}}={{(432)}^{\frac{1}{12}}}\]              


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