Решебник по алгебре 9 класс Макарычев Задание 148

 

\[\boxed{\text{148\ (148).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[y = x^{4}\]

\[\textbf{а)}\ y = 5:\ \ \ \]

\[x_{1} = - 1,5;\ \ \ x_{2} = 1,5;\]

\[\textbf{б)}\ y = 3,5:\ \ \]

\[x_{1} = - 1,4;\ \ \ x_{2} = 1,4;\]

\[\textbf{в)}\ y = 8:\ \ \ \]

\[x_{1} = - 1,7;\ \ \ x_{2} = 1,7.\]

\[\boxed{\text{148.}\text{\ }\text{ОК\ ГДЗ\ -\ домашка\ на\ 5}}\]

\[\textbf{а)}\ 5x - 0,7 < 3x + 5,1\]

\[2x < 5,8\]

\[x < 2,9.\]

\[Ответ:x < 2,9.\]

\[\textbf{б)}\ 0,8x + 4,5 \geq 5 - 1,2x\]

\[2x \geq 0,5\]

\[x \geq 0,25.\]

\[Ответ:x \geq 0,25.\]

\[\textbf{в)}\ 2x + 4,2 \leq 4x + 7,8\]

\[2x \geq - 3,6\]

\[x \geq - 1,8\]

\[Ответ:x \geq - 1,8.\]

\[\textbf{г)}\ 3x - 2,6 > 5,5x - 3,1\]

\[2,5x < 0,5\]

\[x < 0,2.\]

\[Ответ:x < 0,2.\]