Respuesta :

Answer:

x=1=-8

Step-by-step explanation:

[tex] \LARGE{ \underline{\underline{ \pink{ \bf{Required \: answer:}}}}}[/tex]

[tex] {2}^{3} x - 1[/tex]

put the value of x as 1

2³ x 1 - 1

8 -1

7