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kotesh marikala Grade: 12
        

if the roots of the equation x2-ax+b=0 are real and differ by a quantityb less than unity prove that a2-1/4

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

x2 - ax + b = 0


if roots of the eq are (A,B) then


A+B = a , AB = b


A-B = difference of roots = [(A+B)2 - 4AB]1/2


A-B = [ a2 - 4b ]1/2


A-B = b               (given)


s0 , b = [ a2 - 4b ]1/2


 a2 - b2 - 4b = 0


 


approve my ans if u like

6 years ago
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