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10th Class Mathematics Quadratic Equations Question Bank Quadratic Equations

  • question_answer
    If a and R are the roots of the equation \[{{x}^{2}}-8x+p=0\]such that\[{{\alpha }^{2}}+{{\beta }^{2}}=40\], find the value of 'p'.

    A)  8                            

    B)         10  

    C)  12                         

    D)         14

    Correct Answer: C

    Solution :

     The given equation is \['x'\] \[\therefore \] \[1789-49=29x\] (Given) \[\Rightarrow \]               \[x=\frac{1740}{29}=60\] \[\Rightarrow \]               \[140\times 605=11\times L.C.M.\]


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