Question

2 part question:

Evaluate C + D. & Evaluate C - D. (see attachment)

Answer 1

\[\left[\begin{matrix}7+1 & 11+0 \\ -15+4 & 3-11/2\end{matrix}\right]\]
\[\left[\begin{matrix}8 & 11 \\ -11 & -5/2\end{matrix}\right]\]
That is C+D
\[\left[\begin{matrix}7-1 & 11-0 \\ -15-4 & 3+11/2\end{matrix}\right]\]
\[\left[\begin{matrix}6 & 11 \\ -19 & 17/2\end{matrix}\right]\]
This is C-D

Hope that helps.