efetue essas multiplicaçoes
(+2).(+7).(+10)=
(-4).0.(+3).(-8)
(+5).(-3).(+2).(+1).(+2)
(-1).(+2).(-2).(+5.(-3)
(-2).(-5).(-1).(-3)
(-10).(-2).(-2).(-10).(-2)
(+2).(+7).(+10)=
(-4).0.(+3).(-8)
(+5).(-3).(+2).(+1).(+2)
(-1).(+2).(-2).(+5.(-3)
(-2).(-5).(-1).(-3)
(-10).(-2).(-2).(-10).(-2)
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Resposta e Explicaçao Passo-a-Passo:
(+2).(+7).(+10)=
+14.(+10)
+140
(-4).0.(+3).(-8)
-0.(+3).(-8)
-0.(-8)
+0
(+5).(-3).(+2).(+1).(+2)
-15.(+2).(+1).(+2)
-30.(+1).(+2)
-30.(+2)
-60
(-1).(+2).(-2).(+5.(-3)
-2.(-2).(+5).(-3)
+4.(+5).(-3)
+20.(-3)
-60
(-2).(-5).(-1).(-3)
+10.(-1).(-3)
-10.(-3)
-30
(-10).(-2).(-2).(-10).(-2)
+20.(-2).(-10).(-2)
-40.(-10).(-2)
-400.(-2)
+800