Question

Resolva :

$( \frac{1}{125} ) ^{x} =25$

Answer 1

vamos lá...

$( \frac{1}{125} )^x=25 \\ \\ ( \frac{1}{5^3} )^x=5^2 \\ \\ (5^{-3})^x=5^2 \\ \\ -3x=2 \\ \\ 3x=-2 \\ \\ x=- \frac{2}{3}$