Answer :
Theorem: Aij is found by deleting ith rowand jth 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
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