If a,b,c,d and p are distinct real numbers such that (a^2+b^2+c^2 )p^2-2(ab+bc+cd)p+ (b^2+c^2+d^2 ) 0, then

JEE Main Mathematics question

If and are distinct real numbers such that , then

Answer: (B)

The left side equals , a sum of three squares. Being , each square must vanish: , , . So $ ba= cb=

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-021481