Multiple Choice Questions on If alpha amp beta are the roots of the equation ax sup2 bx c 0 then what is the condition for both r........... for CDS Exam Preparation

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Multiple Choice Questions

If alpha amp beta are the roots of the equation ax sup2 bx c 0 then what is the condition for both r...........

Quantitative Aptitude (CDS) Quadratic Equations
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    If α & β are the roots of the equation ax²+bx+c=0 then what is the condition for both roots are negative . 

     

    D ≥0 ∩( α+β )>0 ∩(αβ)>0 

    Incorrect Answer

    D ≥0 ∩ αβ>0

    Incorrect Answer

    D ≥0 ∩(αβ)>0

    Incorrect Answer

    D ≥0 ∩ α+β<0∩αβ>0

    Correct Answer
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    Explanation:

    From the analysis 
     D ≥0  and ( α+β )<0  and (αβ)>0 
    This is a condition of both roots are negative.

    By: bhavesh kumar singh
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