Question

Qual é a resolução da equação exponencial 0,2^x+1=5³

Answer 1

$0,2^{x+1}=5^3\\\\(\frac{2}{10})^{x+1}=5^3\\\\(\frac{1}{5})^{x+1}=5^3\\\\(5^{-1})^{x+1}=5^3\\\\5^{-x-1}=5^3\\\\-x-1=3\\\\-x=3+1\\\\-x=4\;\;\times(-1\\\\\boxed{x=-4}$