Question

Quanto é: a)⁴√81 b)⁴√625 c)⁴√1/81 d)³√-125

Answer 1

a)
= ⁴√81
= ⁴√(3⁴)
= 3

Resp.: 3

81:3
27:3
9:3
3:3
1

b)
= ⁴√625
= ⁴√5 ⁴
= 5

R.: 5

625: 5
125: 5
25:5
5:5
1 = 5 ⁴

c)
= ⁴√1/81
= ⁴√(1/3) ⁴
= 1/3

R.: 1/3

Obs.:
1/3 . 1/3 . 1/3 . 1/3 = 1/81

d)
= ³√-125
= ³√-5 ³
= - 5

R.: - 5

125:5
25:5
5:5
1 = 5³