We have attempted to correct what we perceive to be typographical errors in the presentation of the problem. As written, you can't get to the second expression from the first, and the first expression doesn't match what you say you're trying to simplify.
1) Olá! Adicionando dados faltantes ao enunciado, como a fórmula dada: e corrigindo a quantidade de Energia inicial: Vamos seguir aplicando a fórmula, lembrando das propriedades de logaritmo.
