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Mathematics
Problem
Calculate the first row of
adj
B
\operatorname{adj}B
adj
B
for the matrix
B
=
(
1
2
0
3
−
1
4
2
5
1
)
B=\begin{pmatrix}1&2&0\\3&-1&4\\2&5&1\end{pmatrix}
B
=
1
3
2
2
−
1
5
0
4
1
.
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