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JEE Main & Advanced JEE Main Paper (Held On 9 April 2017)

  • question_answer
    The sum of all the real values of x satisfying the equation \[{{2}^{(x-1)\,(x2+5x-50)}}=1\] is: [JEE Online 09-04-2017]

    A)  16                                         

    B)  - 5

    C)  - 4                                         

    D)  14

    Correct Answer: C

    Solution :

                                    \[(x-5)({{x}^{2}}+5x-50)=0\] \[\Rightarrow \]               \[(x-5)\,(x+10)\,(x-5)=0\] \[\Rightarrow \]               \[x=1,5,\,-10\,\,\,\,\,\,\,\,\,sum\,\,=-4\]


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