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
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
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation