g)1.(-7).2=
h)8.(-2).2=
i) (-2).(-4).5=
j) 3.4.(-7) =
1) 6.(-2).(-4) =
m) 8.(-6).(-2) =
n) 3.(+2).(-1) =
o) 5.(-4).(-4).(+5) =
p) (-2). 5 (-3).(-6) =
9) (-2).(-3).(-1).(-1) =
r) (-4).(-1).(-1).(-2).(+2) =
Soluções para a tarefa
Bom dia !
1 × ( - 7 ) × 2
- 7 × 2
- 14
=========================
8 × ( - 2 ) × 2
- 16 × 2
- 32
=========================
( - 2 ) × ( - 4 ) × 5
+ 8 × 5
40
=========================
3 × 4 × ( - 7 )
12 × ( - 7 )
- 84
=========================
6 × ( - 2 ) × ( - 4 )
- 12 × ( - 4 )
+ 48
=========================
8 × ( - 6 ) × ( - 2 )
- 48 × ( - 2 )
+ 96
=========================
3 × ( + 2 ) × ( - 1 )
6 × ( - 1 )
- 6
=========================
5 × ( - 4 ) × ( - 4 ) × ( + 5 )
- 20 × ( - 4 ) × ( + 5 )
+ 80 × ( + 5 )
+ 400
=========================
( - 2 ) × 5 × ( - 3 ) × ( - 6 )
- 10 × ( - 3 ) × ( - 6 )
+ 30 × ( - 6 )
- 180
=========================
( - 2 ) × ( - 3 ) × ( - 1 ) × ( - 1 )
+ 6 × ( - 1 ) × ( - 1 )
- 6 × ( - 1 )
+ 6
=========================
( - 4 ) × ( - 1 ) × ( - 1 ) × ( - 2 ) × ( + 2 )
+ 4 × ( - 1 ) × ( - 2 ) × ( + 2 )
- 4 × ( - 2 ) × ( + 2 )
+ 8 × ( + 2 )
+ 16
→ Basta aplicar essa regra :
- Todo sinal igual o resultado será positivo
- Todo sinal diferente o resultado será negativo
Um grande abraço !