Answer:
[tex]x=-1[/tex]
[tex]y=5[/tex]
Step-by-step explanation:
[tex]\begin{pmatrix}x&y\\ \:-1&4\end{pmatrix}\begin{pmatrix}2&5\\ \:4&1\end{pmatrix}=\begin{pmatrix}18&0\\ \:14&-1\end{pmatrix}[/tex]
[tex]\begin{pmatrix}x&y\\ -1&4\end{pmatrix}\begin{pmatrix}2&5\\ 4&1\end{pmatrix}[/tex]
[tex]=\begin{pmatrix}x\times \:2+y\times \:4&5x+y\\ 14&-1\end{pmatrix}[/tex]
[tex]=\begin{pmatrix}18&0\\ 14&-1\end{pmatrix}[/tex]
[tex]\begin{bmatrix}x\times \:2+y\times \:4=18\\ 5x+y=0\end{bmatrix}[/tex]
[tex]x=-1[/tex]
[tex]y=5[/tex]
OAmalOHopeO
