'combination/matrix in latex

I am trying the write something below in latex and what I am trying seems not working well.

\documentclass[10pt,english,8pt]{beamer}
\usepackage{amsmath}
\begin{document}

\begin{frame}

\begin{itemize}
    \item Observation equation: 
    
 $\begin{pmatrix}
    PD_{s,t}\\ 
    RR_{s,t} 
\end{pmatrix} = \binom(\gamma_{1}\gamma_{2}) = bla
    
    
\end{itemize}

\end{frame}
\end{document}

enter image description here

latexphplaravel-8


Solution 1:[1]

Just add the route in the web.php file. For example:

Route::get('/restore', '\App\Http\Controllers\HomeController@restore');

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Dharman

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