1. Calcule o valor das expressões (primeiro as potências):

35 + 5²= 50 - 4² =

a) ( ) +65 a) ( ) -66

b) ( ) – 65 b)( ) +66

c) ( ) +60 c) ( ) –34

d) ( ) – 55 d) ( ) +30

e) ( ) +50 e) ( ) +34