Multiple Choice Questions on The value of x which satisfy the equation 51 x 51 x are ........ for CDS Exam Preparation

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Multiple Choice Questions

The value of x which satisfy the equation 51 x 51 x are ........

Quantitative Aptitude (CDS) Simplification
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    The value of x which satisfy the equation 51+x + 51-x are

    -1, 1

    Correct Answer

    0, 1

    Incorrect Answer

    1, 2

    Incorrect Answer

     -1, 0

    Incorrect Answer
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    Explanation:

    We can solve by using option (1)
    put x = -1 and  x = 1
    51+x + 51-x = 26
    Let x = -1
    LHS = 51-1+51+1 = 1+25=26= RHS

    By: Munesh Kumari
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