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

  • question_answer
    Simplify \[{{\left( 5a{{n}^{-2}} \right)}^{-1}}\]

    A)  \[\frac{{{n}^{2}}}{5a}\]

    B)  \[\frac{n}{5a}\]          

    C)  \[\frac{{{n}^{3}}}{5a}\]                                

    D)  \[\frac{{{n}^{4}}}{5a}\]

    Correct Answer: A

    Solution :

     (a): \[{{\left( 5a{{n}^{-2}} \right)}^{-1}}={{\left( \frac{5a}{{{n}^{2}}} \right)}^{-1}}=\frac{{{n}^{2}}}{5a}.\]


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