Question

1- Calcule os produtos:
a) (+5).(+2)=
b) (2−2).(3+8)=
c) (3+2).(2+1)=
d) (5−2).(2−1)=

Answer 1

Resposta:

a) (+5).(+2)=10

b) (2−2).(3+8)=0

c) (3+2).(2+1)=15

d) (5−2).(2−1)=3