Multiple Choice Questions on Given that a b c are real and distinct number then find the nature of roots of this equation a c b x........... for CDS Exam Preparation

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Multiple Choice Questions

Given that a b c are real and distinct number then find the nature of roots of this equation a c b x...........

Quantitative Aptitude (CDS) Quadratic Equations
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    Given that a,b,c are real and distinct number then find the nature of roots of this equation (a+c-b) x² + 2cx + (b + c –a ) = 0  . 

     real and equal 

    Incorrect Answer

     real and unequal 

    Correct Answer

     imaginary roots 

    Incorrect Answer

     can’t find

    Incorrect Answer
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    Explanation:

    Formula D = b² - 4ac where from given equation  
      A → ( a+c-b) 
    B → 2c
    C → ( b + c –a )
    Put these value in above equation and on solving it we get finally D = 4 ( a- b )² 
       a, b, c distinct . hence D > O
    so roots are real and unequal

    By: bhavesh kumar singh
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