номер 246 гдз 8 класс алгебра Муравин Муравин

1)\begin{equation}\sqrt{3^{200}} \end{equation} \begin{equation}\sqrt{3^{200}}=3^{100} \end{equation}
2)\begin{equation}\sqrt{5^{-120}} \end{equation} \begin{equation}\sqrt{\frac{1}{5^{120}}}=\frac{1}{5^{60}} \end{equation}
3)\begin{equation}\sqrt{\frac{1}{7^{250}}} \end{equation} \begin{equation}\frac{1}{7^{125}} \end{equation}
4)\begin{equation}\sqrt{\frac{11^{187}}{11^{31}}} \end{equation} \begin{equation}\sqrt{11^{187-31}}=\sqrt{11^{156}}=11^{78} \end{equation}
5)\begin{equation}\sqrt{13^{251}\cdot 13^{17}}=\sqrt{13^{251+17}}= \end{equation} \begin{equation}=\sqrt{13^{538}}=13^{269} \end{equation}
6)\begin{equation}\sqrt{\left ( 31^{-50} \right )^{-2}:31^{8}}=\sqrt{31^{100}:31^{8}}= \end{equation} \begin{equation}=\sqrt{31^{100-8}}=\sqrt{31^{92}}=31^{46} \end{equation}