Задача 57890 ...

60290f4c3cfdeb46290c8bb2

14.02.2021 14:54:26

0,8^(0,8-5x) = 0,5√5

5f3ea7e3faf909182968ddd9

14.02.2021 15:56:21

★

[m]0,8^{0,8-5x}=\frac{5^{\frac{1}{2}}}{2}[/m]

[m](\frac{4}{5})^{0,8-5x}=\frac{5^{\frac{1}{2}}}{4^{\frac{1}{2}}}[/m]


[m](\frac{4}{5})^{0,8-5x}=(\frac{4}{5})^{-\frac{1}{2}}[/m]

[m](\frac{4}{5})^{0,8-5x}=(\frac{4}{5})^{-0,5}[/m]


0,8-5x=-0,5

-5x=-0,5-0,8

5x=1,3

x=0,26