Question

Resolva as expressões:

a) 5 - 1 + (+1 )² =
2 2

b) ( - 1 + 1 ) - ( 1 + 2 ) =
2 6 3

c) ( 1 - 3 ) : ( 1 - 2 )=
2 4 5

Answer 1

a) 4+1=5
b)0-3=-3
c)2:1=2