Let p = a - b , q = a + b . If | a |=| b |=2 and a b =2, then what is the value of | p q |?

NDA 2025 Mathematics question

Let , . If and , then what is the value of ?

Answer: (D)

. By Lagrange's identity,

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

Question ID VK-030197