1.знайти х, якщо
[tex] {5}^{x =} = \frac{1}{5} [/tex]
а) -1
б)1
в)0
г)-2
д)2
[tex] {5}^{x =} = \frac{1}{5} [/tex]
а) -1
б)1
в)0
г)-2
д)2
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Ответ:
а)-1
[tex] {5}^{x} = \frac{1}{5} [/tex]
[tex] {5}^{x} = {5}^{ - 1} [/tex]
[tex]x = - 1[/tex]