Question

8 - Calcule:

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

b) (+3).(-7) =

c)(-5).(-2) = d) (-3). (+7) =​

Answer 1

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

b) (+3) . (-7) = - 21

c) (-5) . (-2) = + 10

d) (-3) . (+7) = - 21

Answer 2

Resposta:

a)+10

b)-21

c)+10

d)-21