Let p, q (p>q) be the roots of the quadratic equation x^2+bx+c=0 where c>0. If p^2+q^2-11pq=0, then what is p-q equal to?

NDA 2022 Mathematics question

Let , be the roots of the quadratic equation where . If , then what is equal to?

Answer: (A)

. From : . Since , .

Question ID VK-029422