10th Class Mathematics Polynomials Question Bank MCQs - Polynomials

  • question_answer
    If \[\alpha ,\beta ,\gamma \] be the zeroes of the polynomial \[p(x)\] such that \[(\alpha +\beta +\gamma )=3,\] \[(\alpha \beta +\beta \gamma +\gamma \alpha )=-10\]  and \[\alpha \beta \gamma =24,\] then \[p(x)=\]

    A) \[{{x}^{3}}+3{{x}^{2}}-10x+24\]

    B) \[{{x}^{3}}-3{{x}^{2}}-10x-24\]

    C) \[{{x}^{3}}-3{{x}^{2}}-10x+24\]

    D) \[None\,\, of\,\, these\]

    Correct Answer: B

    Solution :

    [b] \[p(x)={{x}^{3}}-(\alpha +\beta +\gamma ){{x}^{2}}+(\alpha \beta +\beta \gamma +\gamma \alpha )x-\alpha \beta \gamma \]\[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,p(x)={{x}^{3}}-3{{x}^{2}}-10x-24\]


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