#### Answer

$\left[\begin{array}{lll}
1 & 5 & 6\\
0 & 19 & 26\\
3 & 7 & 1
\end{array}\right]$

#### Work Step by Step

$\left[\begin{array}{lll}
1 & 5 & 6\\
-4+4(1) & -1+4(5) & 2+4(6)\\
3 & 7 & 1
\end{array}\right]=\left[\begin{array}{lll}
1 & 5 & 6\\
0 & 19 & 26\\
3 & 7 & 1
\end{array}\right]$