Subject :IMO Class : Class 9
If the roots of (p - q)2 x2 + 2 (p2 - q2) x + k = 0 are equal, then k = ________.
(A) (p + q)2
(B) (p - q)2
(C) p2 - q2
(D) 0
Ans 1: (Master Answer)
Class : Class 1
The correct answer is A.