3. Marque a alternativa errada quanto a divisão de numeros
inteiros .

a) (-20):(+10)= -2

b) (+12):(+4)= +3

c) (-4):(+2)= -2

d) (-10):(-10)=-1


4. das alternativas abaixos qual representa a resposta CORRETA:

a) (+213)°=)+1

b) (-2)¹=-1

c) (+3)²=+6

d) (-2)³=-6

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