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номер 112 гдз 8 класс алгебра Муравин Муравин
1)\begin{equation}\left ( \frac{1}{2}c-d \right )^{7}
\end{equation}
\begin{equation}\frac{c^{7}}{128}-\frac{7c^{6}d}{64}+\frac{21c^{5}d^{2}}{32}-
\end{equation}
\begin{equation}-\frac{35c^{4}d^{3}}{16}+\frac{35c^{3}d^{4}}{8}-\frac{21c^{2}d^{5}}{4}+
\end{equation}
\begin{equation}+\frac{7cd^{6}}{2}-d^{7}
\end{equation}
2)\begin{equation}\left ( b-\frac{1}{b} \right )^{8}
\end{equation}
\begin{equation}b^{8}-8b^{6}+28b^{4}-56b^{2}+70-
\end{equation}
\begin{equation}-\frac{56}{b^{2}}+\frac{28}{b^{4}}-\frac{8}{b^{6}}+\frac{1}{b^{8}}
\end{equation}
3)\begin{equation}\left ( x+\frac{1}{2x} \right )^{6}
\end{equation}
\begin{equation}x^{6}+6\cdot x^{5}\cdot \frac{1}{2x}+15x^{4}\cdot \left ( \frac{1}{2x} \right )^{2}+
\end{equation}
\begin{equation}+20x^{3}\cdot \left ( \frac{1}{2x} \right )^{3}+15x^{2}\cdot \left ( \frac{1}{2x} \right )^{4}+
\end{equation}
\begin{equation}+6x\cdot \left ( \frac{1}{2x} \right )^{5}+\left ( \frac{1}{2x} \right )^{6}=
\end{equation}
\begin{equation}=x^{6}+3x^{4}+\frac{15x^{4}}{4x^{2}}+20x^{3}\cdot \frac{1}{8x^{3}}+
\end{equation}
\begin{equation}15x^{2}\cdot \frac{1}{16x^{4}}+6x\cdot \frac{1}{32x^{5}}+
\end{equation}
\begin{equation}+\frac{1}{64x^{6}}=x^{6}+3x^{4}+\frac{15}{4}x^{2}+
\end{equation}
\begin{equation}+\frac{5}{2}+\frac{15}{16x^{2}}+\frac{3}{16x^{4}}+\frac{1}{64x^{6}}
\end{equation}
