Resposta :
Resposta:
[tex]\textsf{Leia abaixo}[/tex]
Explicação passo a passo:
[tex]\mathsf{3.4^{x - 1} = 96}[/tex]
[tex]\mathsf{4^{x - 1} = 32}[/tex]
[tex]\mathsf{(2^2)^{x - 1} = 2^5}[/tex]
[tex]\mathsf{2^{2x - 2} = 2^5}[/tex]
[tex]\mathsf{2x - 2 = 5}[/tex]
[tex]\mathsf{2x = 7}[/tex]
[tex]\boxed{\boxed{\mathsf{x = \dfrac{7}{2}}}}\leftarrow\textsf{letra A}[/tex]
Resposta:
Se for 3 * 4ˣ⁻¹ =96
3*4ˣ *4⁻¹ =96
3*4ˣ *(1/4) =96
3*4ˣ =96 * 4
4ˣ =96 * 4/3
4ˣ =128
4ˣ =2⁷
2²ˣ =2⁷
2x = 7
x=7/2