Find A - B. $$A = \left[ \begin{array} { l l }
2 & - 2 \
4 & - 2
\end{array} \right] , B = \left[ \begin{array} { c c }
4 & - 2 \
- 2 & 8
\end{array} \right]$$
A) $\left[ \begin{array} { c c }
2 & 0 \
- 10 & 6
\end{array} \right]$
B) $\left[ \begin{array} { c c }
0 & - 10 \
6 & 0
\end{array} \right]$
C) $\left[ \begin{array} { c c }
- 6 & 0 \
6 & - 10
\end{array} \right]$
D) $\left[ \begin{array} { c c }
- 4 & 0 \
6 & - 10
\end{array} \right]$
E) $\left[ \begin{array} { c c }
- 2 & 0 \
6 & - 10
\end{array} \right]$

Question

Find A - B.   $$A = \left[ \begin{array} { l l } 
2 & - 2 \
4 & - 2
\end{array} \right] , B = \left[ \begin{array} { c c } 
4 & - 2 \
- 2 & 8
\end{array} \right]$$  
A) $\left[ \begin{array} { c c } 
2 & 0 \
- 10 & 6
\end{array} \right]$
B) $\left[ \begin{array} { c c } 
0 & - 10 \
6 & 0
\end{array} \right]$
C) $\left[ \begin{array} { c c } 
- 6 & 0 \
6 & - 10
\end{array} \right]$
D) $\left[ \begin{array} { c c } 
- 4 & 0 \
6 & - 10
\end{array} \right]$
E) $\left[ \begin{array} { c c } 
- 2 & 0 \
6 & - 10
\end{array} \right]$

Quizplus · Accepted Answer

To find $A - B$, subtract each element of matrix $B$ from the corresponding element in matrix $A$. The result is $\left[ \begin{array} { c c } 2-4 & -2-(-2) \ 4-(-2) & -2-8 \end{array} \right] = \left[ \begin{array} { c c } -2 & 0 \ 6 & -10 \end{array} \right]$.

Find a - B A=[2−24−2],B=[4−2−28]A = \left[ \begin{array} { l l } 2 & - 2 \\4 & - 2\end{array} \right] , B = \left[ \begin{array} { c c } 4 & - 2 \\- 2 & 8\end{array} \right]A=[24​−2−2​],B=[4−2​−28​]

Find a - B $A = \left[ \begin{array} { l l } 2 & - 2 \\4 & - 2\end{array} \right] , B = \left[ \begin{array} { c c } 4 & - 2 \\- 2 & 8\end{array} \right]$