Respuesta:
a.-
[tex] {2}^{x} = 256 \\ {2}^{x} = {2}^{8} \\ x = 8[/tex]
b.-
[tex] \sqrt{x} = 9 \\ x = {9}^{2} \\ x = 81[/tex]
c.-
[tex] {x}^{3} = 729 \\ x = \sqrt[3]{729 } \\ x = 9[/tex]
d.-
[tex] {3}^{8} = x \\ 6561 = x[/tex]
