номер 231 гдз 8 класс алгебра Муравин Муравин

1)\begin{equation}\sqrt{0,49}=0,7 \end{equation} 2)\begin{equation}\sqrt{0,09}=0,3 \end{equation} 3)\begin{equation}\sqrt{\frac{4}{49}}=\frac{2}{7} \end{equation} 4\begin{equation}\sqrt{\frac{81}{25}}=\frac{9}{5} \end{equation} 5)\begin{equation}\sqrt{1\frac{9}{16}}=\sqrt{\frac{25}{16}}=\frac{5}{4} \end{equation} 6)\begin{equation}\sqrt{1\frac{25}{144}}=\sqrt{\frac{169}{144}}=\frac{13}{12} \end{equation} 7)\begin{equation}\sqrt{\left ( -3\cdot 2 \right )^{2}}=\sqrt{\left ( -6 \right )^{2}}=\sqrt{36}=6 \end{equation} 8)\begin{equation}\sqrt{\left ( 7\cdot 5 \right )^{4}}=\sqrt{35^{4}}=35^{2}=1225 \end{equation}