\documentclass{article}
\usepackage[top=3cm, bottom=3cm, left=2.5 cm, right=3.5 cm]{geometry}
\usepackage{amsthm,amsmath,amssymb}
\usepackage{xcolor}
\usepackage{hhline}
\usepackage{xepersian}
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\begin{document}
\begin{table}
\centering
\begin{latin}
\begin{tabular}{|c||c|c|c|c|c|c|}
\hline
&$R_1$&$R_2$&$R_3$&$R_4$&$R_5$&$R_6$\\
\hline
$x_1$&$-8$&$0$&$x_1^*$&$x_1^\dagger$&$x_1^\ddagger$&$\frac{8}{2m-1}$\\
\hline
$x_2$&$\frac{43}{3}$&$0$&$0$&$0$&$0$&$0$\\
\hline
$x_3$&$0$&$0$&$0$&$0$&$0$&$\frac{8m^3-4m^2-66m+129}{3(2m+3)(2m-1)^2}$\\
\hline
$x_4^2$&$\frac{-8}{3}$&$0$&$(x_4^2)^*$&$(x_4^2)^\dagger$&$(x_4^2)^\ddagger$&$\frac{4(4m^3+4m^2-39m-6)}{3(2m+3)(2m-1)^2}$\\
\hline
$x_5$&$0$&$1$&$0$&$0$&$0$&$0$\\
\hline
\end{tabular}
\end{latin}
\caption{نقاط بحرانی دوره تابش غالب}
\end{table}


\end{document}