We have been given the matrix m as m = [874][205].
We can rewrite this matrix as
[tex]m=\begin{pmatrix}8 &7&4\\2&0&5 \\\end{pmatrix}\\[/tex]
Now, we need to the find [tex]m_{12}[/tex]
It means we need to find the entity that is present in the first row and the second column.
From the above matrix, we can see that 7 is in the first row and the second column.
Therefore, we have
[tex]m_{12}= 7[/tex]