# Seatwork 3 (Matrices and Matrix Operations)

Given the following matrices:
$$
A=\begin{bmatrix}
1&-1&-2\\
2&3&-1\\
-2&1&2
\end{bmatrix},
B=\begin{bmatrix}
2&0\\
-1&0\\
1&1
\end{bmatrix},
C=\begin{bmatrix}
3&2\\
-1&2
\end{bmatrix},
\\
D=\begin{bmatrix}
4&0.5\\
-2&-1
\end{bmatrix},
E=\begin{bmatrix}
-1.5&1&-0.5\\
4&-2&1\\
-0.5&0&-0.5
\end{bmatrix},
$$
Solve for the following:

1. $A+B$
2. $A + 2E$
3. $BC$​
4. $CB$
5. $BC + B$
6. $DB^{T}$