11TH•Mathematics•Matrices And Determinants•Question 2
Part (i): Compute $A - B$
If $A=\begin{bmatrix}0&-1&2\\3&2&1\\-1&0&4\end{bmatrix}$, $B=\begin{bmatrix}2&1&-1\\1&2&4\\-1&2&1\end{bmatrix}$ and $C=\begin{bmatrix}1&0&-2\\-1&5&0\\3&4&-1\end{bmatrix}$, then find:
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