Question

calcule
a) (+2).(+9)=
b) (+7).(-5)=
c) (+3).(+14)=
d) 0.(-17)=
e) (+2).(-9)=
f) (-8).(+11)=
g) (+5).(-17)
h) (+11).0=
i) (-2).(+31)=​

Answer 1

Resposta:

a) + 18

b) - 35

c) + 32

d) 0

e) -18

f) -88

g) -85

h) 0

i) - 62

Explicação passo-a-passo:

( + . + ) = +

( + . - ) = -

( - . - ) = +