Question

Quanto vale x?

a) x³ = 27
b) x³ = 125
c) x4 = 81
d) x4 = 16
e) x4 = 256
f) x5 = 243

Por favor me ajudem a resolver este problema!

Answer 1

a) x³ = 27
$x= \sqrt[3]{27}$
x = 3

b) x³ = 125
$x=\sqrt[3]{125}$
x = 5

c) x4 = 81
$x= \sqrt[4]{81}$
x = 4

d) x4 = 16
$x= \sqrt[4]{16}$
x = 2

e) x4 = 256
$x= \sqrt[4]{256}$
x = 4

f) x5 = 243
$x= \sqrt[5]{243}$
x = 3