If then write the value of contexto.140 3 years ago Solution: Therefore It is given that, , Therefore, and Hence,
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![\left[\begin{array}{cc}x-y & 2 y \\ 2 y+z & x+y\end{array}\right]=\left[\begin{array}{ll}1 & 4 \\ 9 & 5\end{array}\right]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-b5dbf1a69a5f25902e0952ec0cecd638_l3.png "Rendered by QuickLaTeX.com")
![\left[\begin{array}{cc}x-y & 2 y \\ 2 y+z & x+y\end{array}\right]=\left[\begin{array}{ll}1 & 4 \\ 9 & 5\end{array}\right]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-2ca4ce3421a2dc3e7599f50fd58c71fa_l3.png "Rendered by QuickLaTeX.com")
