efetue as multiplicação:
a) (-4).(-5).(+2)=
b) (-7).(+2).(-1)=
c)(+9).(-2).(+5)=
d)(-5).(+3).(-2)=
e) (-10).(+2).(+3)=
f) (-1).(-4).(+3).(-2)=
g)(-5).(-3).(-8).(+3)=
h)(+10).(-2).(+1).(-3).(+2)=
i)(-3).(+2).(-1).(+4).(10)=
j)(-1).(+1).(-1)=
k)(-2).(-2).(-2).(-2)=
i)(-1).(-1).(-1).(-1).(-1).(-1)=

me ajudem pfv!!!! :)​