Question

equaçao exponcial
125^x+2 = 1/5

Answer 1

$125^{x+2}= \dfrac{1}{5}\\\\ (5^3)^{x+2}=5^{-1}\\\\ \not5^{3x+6}=\not5^{-1}\\\\ 3x+6=-1\\ 3x=-7\\\\ x=-\dfrac{7}{3}\\\\ S=\left\{- \dfrac{7}{3}\right\}$

Answer 2

5^3x+6= 5^-1
corta base iguais(5)
3x+6=-1
3x=-7
x=-7\3