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10th Class Mathematics Polynomials Question Bank MCQs - Polynomials

  • question_answer
    If \[\alpha \] and \[\beta \] are the zeroes of the polynomial \[2{{x}^{2}}-13x+6,\] then \[\alpha +\beta \] is:                         (CBSE 2020)

    A) \[-3\]

    B) \[3\]

    C) \[\frac{13}{2}\]

    D) \[-\frac{13}{2}\]  

    Correct Answer: C

    Solution :

    [c] Let  \[f(x)=2{{x}^{2}}-13x+6\]
    Here,
        \[\alpha +\beta =-\frac{\text{Coefficient of }\,\text{x }}{\text{Coefficient of }\,{{\text{x}}^{2}}}=-\frac{(-13)}{2}=\frac{13}{2}\]


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