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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-3

  • question_answer
    If\[(x-2)\] is a factor of \[~{{x}^{3}}+k{{x}^{2}}~-\text{ }2x24\] then what is the value of k?

    A) 6                     

    B) 5

    C) 1                     

    D) 2

    Correct Answer: B

    Solution :

    \[{{x}^{3}}~+k{{x}^{2}}-2x-24\] here, \[x=2\] \[\left( 2 \right)~+\text{ }k\left( 2 \right)~-2\times 2-24=0\] \[\Rightarrow \]   \[8+4k424=0\] \[\Rightarrow \]   \[4k-20=0\]\[\therefore \]\[\]


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