Question

me ajuda :
calcule o valor da expresao

Answer 1

Resolvendo as potências de maneira separada:

27 ^(1/3)= (3^3)^(1/3) = 3^(3/3)=3
64^(1/2)= (8^2)^(1/2)= 8^(2/2)=8
-8^(2/3)= - (2^3)^(2/3)=- 2^(2.3/3)= - (2)^(2) =-4
4^(1/2)= (2^2)^(1/2)=2^(2/2)=2

Resolvendo toda a expressão:

(3+8-4+2)^(1/2)= (9)^(1/2)=3