Answer
$\begin{bmatrix}
0 & 12 & -20\\
4 & 8 & 24
\end{bmatrix}$
Work Step by Step
We are given that $A=\begin{bmatrix}
0 & 3 & -5\\
1 & 2 & 6
\end{bmatrix}$
Now, $4 A= 4 \begin{bmatrix}
0 & 3 & -5\\
1 & 2 & 6
\end{bmatrix} \\ =\begin{bmatrix}
(4) (0) & (4)(3) & (4)(-5)\\
(4)(1) & (4)(2) & (4)(6)
\end{bmatrix} \\=\begin{bmatrix}
0 & 12 & -20\\
4 & 8 & 24
\end{bmatrix}$
