Let a = - i + 2 j + 2 k , b = 8 i + 7 j - 3 k and c be a vector such that a c = b . If c ( i + j + k ) = 4,...

Question

Let a = - i + 2 j + 2 k , b = 8 i + 7 j - 3 k and c be a vector such that a c = b . If c ( i + j + k ) = 4, then | a + c |^2 is equal to :

Accepted Answer

(4)

JEE Main 2026 Mathematics question