Then k is
(A) 12
(B) –2
(C) –12, –2
(D) 12, –2
Rationalised 2023-24
 84
MATHEMATICS
4 4  Minors and Cofactors
In this section, we will learn to write the expansion of a determinant in compact form
using minors and cofactors Definition 1 Minor of an element aij of a determinant is the determinant obtained by
deleting its ith row and jth column in which element aij lies Minor of an element aij is
denoted by Mij