Question

2) Complete a tabela ​

Answer 1

Resposta:

Tabela 1 (a+b)

10-12=-2

-5+9=+4

+4-8=-4

-4+8=+4

Tabela 2 (a-b)

10-(-12)= 22

-5-9=-14

+4-(-8)=12

-4-8=-12

Tabela 3 (a.b)

10.(-12)=-120

(-5).9=-45

+4.(-8)=-32

-4*8=-32