2×2×2-2×2-(-2)×(-2)-(-2)×(-2)×(-2)=-8
8-4-4-8=-8
(-2)×(-2)=4
(-2)×(-2)×(-2)=-8
-×-=+
-×-×-=-
2³ - 2²- (-2)² -(-2)³ =
= 8 - 4 - (+4) - (-8) =
= 4 - 4 + 8 =
= 8
