If A_ij

Theorem: A_ij is found by deleting i^th rowand j^th column, the determinant of left matrix is called cofactor with multiplied by (-1)^(i+j).

Given: i=3 and j=2.

A₃₂=(-1)⁽³⁺²⁾(2 × 4-6 × 5)

=-1 × (-22)

=22

a₃₂=5

a₃₂A₃₂= 5 × 22

=110