ГДЗ по алгебре 9 класс Макарычев Задание 253

\[\boxed{\text{253}\text{\ (253)}\text{.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[y = x^{n}\]

\[\textbf{а)}\ A\ (2;8):\ \ \]

\[8 = 2^{n}\]

\[2^{n} = 2^{3}\]

\[n = 3.\]

\[\textbf{б)}\ \text{B\ }(3,5;12,25):\ \ \ \]

\[12,25 = {3,5}^{n}\]

\[{3,5}^{n} = {3,5}^{2}\]

\[n = 2.\]

\[\textbf{в)}\ \text{C\ }( - 3;81):\ \ \]

\[81 = ( - 3)^{n}\]

\[( - 3)^{n} = ( - 3)^{4}\]

\[n = 4.\]

\[\textbf{г)}\ \text{D\ }( - 2; - 32):\ \ \ \ \]

\[- 32 = ( - 2)^{n}\]

\[( - 2)^{n} = ( - 2)^{5}\]

\[n = 5.\ \]