10th Class Mathematics Sample Paper Mathematics Sample Paper-6

  • question_answer If\[\alpha \]and\[\beta \]are the roots of the polynomial\[\mathbf{a}{{\mathbf{x}}^{\mathbf{2}}}+\mathbf{bx}+\mathbf{c}\], then find the value of\[{{\alpha }^{\mathbf{2}}}+{{\beta }^{\mathbf{2}}}\]

    A) \[\frac{{{b}^{2}}-2ac}{{{a}^{2}}}\] 

    B) \[\frac{b+2ac}{a}\]

    C) \[\frac{b-2ac}{a}\]        

    D) \[\frac{{{b}^{2}}+2ac}{{{a}^{2}}}\]

    E) None of these

    Correct Answer: A


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