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10th Class Mathematics Quadratic Equations Question Bank Quadratic Equations

  • question_answer
    Find the roots of the quadratic equation

    A)  \[\frac{-1}{2},1\]            

    B)         \[-1,\frac{1}{2}\]            

    C)  \[\frac{1}{2},1\]                              

    D)         \[-1,\frac{-1}{2}\]

    Correct Answer: D

    Solution :

     \[=\left( \frac{144}{48}+\frac{384}{48}+\frac{240}{48} \right)=3+8+5=16\] \[\frac{a}{b}\] \[\frac{c}{d}=\frac{L.C.M.(a,c)}{H.C.F.(b,d)}\] \[\Rightarrow \] \[L.C.M.\]or \[\frac{6}{14}and\frac{2}{7}\]


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