Răspuns :
3. A) -9
B) +10
C) -9
D)(+6)•(-4) = -24
E) +72
F) (-6)•(-4)•(-5)= (+24)•(-5) = -120
4. A)+14.
B) +30
C) -16
D)(+15)•(+2)= +30
E) (+726)•(+11) =+7986
F) (+3)•(-2)= -6
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3.
A)(-9)×(+1)=-9
B)(-5)×(-2)=+10
C)(+3)×(-3)=-9
D)(-2)×(-3)×(-4)=-24
E)(+9)×(+8)=+72
F)(-2)×(+3)×(-4)×(+5)=+120
4.
A)(-7)×(-2)=+14
B)(+5)×(+6)=+30
C)(+4)×(-4)=-16
D)(-3)×(-5)×(+2)=+30
E)(-33)×(-22)×(+11)=+7986
F)(-1)×(-3)×(-2)=-6