Question

calcule a equação exponencial 2²x-¹=2³​

Answer 1

$\sf{segue \:\: abaixo \: a \: resposta}$

$\sf{2²x-¹=2³}$

$\sf{ {2}^{2}x {}^{ - 1} = {2}^{3} \: ,x \: \neq0}$

$\sf{x {}^{ - 1} = 2}$

$\sf{ \frac{1}{x} = 2}$

$\sf{1 = 2}x$

$\sf{1= 2x} = 2x = 1$

$\sf{2x = 1}$

$\sf{1 \div 2 = \frac{1}{2} }$

$\sf{x = \frac{1}{2} , \: x \: \neq0}$

$\boxed{\boxed{{\sf{x = \frac{1}{2} }}}}$