ГДЗ по алгебре 8 класс Макарычев Задание 218

\[\boxed{\text{218\ (218).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[a - b = 9\]

\[\textbf{а)}\frac{36}{(a - b)^{2}} = \frac{36}{9^{2}} = \frac{36}{81} = \frac{4}{9}\]

\[\textbf{б)}\ \frac{108}{(b - a)^{2}} = \frac{108}{(a - b)^{2}} = \frac{108}{9^{2}} =\]

\[= \frac{108}{81} = \frac{4}{3} = 1\frac{1}{3}\]

\[\textbf{в)}\ \frac{(5a - 5b)^{2}}{45} = \frac{25(a - b)^{2}}{45} =\]

\[= \frac{5 \cdot 9^{2}}{9} = 5 \cdot 9 = 45\]