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8th Class Mathematics Algebraic Expressions Question Bank Algebraic Expressions & Identities

  • question_answer
    If \[\mathbf{x}+\frac{1}{\mathbf{x}}=\mathbf{5}\], then the value of \[{{\mathbf{x}}^{2}}+\frac{1}{{{\mathbf{x}}^{2}}}=\]

    A)  21                               

    B)  22            

    C)  23   

    D)  24

    Correct Answer: C

    Solution :

    (c): Use logic of Q14 or Q15 or Q16.


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