Question

14) Calcule: (valor: 0,5)
a) (+3).(-6)=
b) (-2).(+5)=
c)(+1).(+8)=​

Answer 1

Resposta:

a) (+3).(-6)= - 18

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

c)(+1).(+8)= 8

Answer 2

Resposta ↓

a) = - 18

b) = - 10

c) =  + 8

Explicação passo-a-passo:

Cuidamos o jogo de sinais :

$a) (+3).(-6)\\\\\\{\boxed{\sf a) = -18}$

$b) (-2).(+5)\\\\\\{\boxed{\sf b) = -10}$

$c) (+1).(+8)\\\\\\{\boxed{\sf c)= +8}$