resolva as seguintes expressoes:
a) ( + 10 ) . ( - 12 ) . ( + 1 ) . ( - 3 ) . ( + 2 ) =
b) ( - 3 ) . ( - 2 ) . ( - 10 ) . ( + 4 ) =
c) ( - 2 ) . ( - 2 ) . 0 . ( - 2 ) . ( - 2 ) =
d) ( + 1 ) . ( + 3 ) . ( - 3 ) . ( - 3 ) =
e) ( - 1 ) . ( - 12 ) . ( + 57 ) =
a) ( + 10 ) . ( - 12 ) . ( + 1 ) . ( - 3 ) . ( + 2 ) =
b) ( - 3 ) . ( - 2 ) . ( - 10 ) . ( + 4 ) =
c) ( - 2 ) . ( - 2 ) . 0 . ( - 2 ) . ( - 2 ) =
d) ( + 1 ) . ( + 3 ) . ( - 3 ) . ( - 3 ) =
e) ( - 1 ) . ( - 12 ) . ( + 57 ) =
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Explicação passo-a-passo:
a) (-120) . (+1) . (-3) . (+2)=
(-120) .(-3) .(+2)=
+ 360 . (+2)=
+720
b) (+6) .(-10) . (+4)=
(-60) . (+4)=
- 240
c) 0
d) (+3) . (-3) .(-3)=
(-9) . (-3)=
+ 27
e) (+12) . (+57)=
+ 684