Answer :

The quadratic equation has two equal roots


D = b2 - 4ac = 0


=


= 20p2 - 60p = 0


= 20p (p - 3) = 0


p = 0 or p = 3


For p = 0 in the equation 0 + 0 + 15 = 0 but this is not possible


Thus p0


p = 3


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses