Pergunta:
ME AJUDEM POR FAVOR Resolva as seguintes equações exponenciais:
Respostas
a) 2^(3x + 2) = 1/8
2^(3x + 2) = 1/2³
2^(3x + 2) = 2^(-3)
3x + 2 = -3
3x = -5
x = -5/3
b) 3^(-x + 2) = 27
3^(-x + 2) = 3³
-x + 2 = 3
-x = -5
x = 5
c) (25/9)^(x – 1) = (5/3)^(4x – 3)
[(5/3)²]^(x – 2) = (5/3)^(4x – 3)
(5/3)^(2x – 4) = (5/3)^(4x – 3)
2x – 4 = 4x – 3
2x – 4x = -3 + 4
-2x = 1
x = -1/2