Question

1) Calcule o valor das expressões:

A) ( - 2/3 )³ + 1 =

B) ( 3/5 )² + ( - 1/2)²

C) (5 - 1/2) + (1/2)²

Answer 1

A) (-2/3)^3 + 1

=> - 8/27 + 1

=> - 8/27 + 27/27

=> 19/27


B) (3/5)^2 + ( - 1/2)^2

=> 9/25 + 1/4

=> 36/100 + 25/100

=> 61 / 100


C) (5 - 1/2) + (1/2)^2

=> (10/2 - 1/2 ) + 1/4

=> 9/2 + 1/4

=> 18/4 + 1/4

=> 19/4

Answer 2

(forma fracionária)
A) 8/27 + 1
B) 61/100
C) 19/4