a) ( 1 + 2 + 3)^3 : 36 =
6^3 : 36 =
6^3 : 6^2 =
6^(3-2) =
6^1 = 6
b) ( - 2 )^3 : ( - 15 : 3 + 7) =
- 8 : ( - 5 + 7) =
- 8 : 2 =
- 4
c) - 3 + 2(1 + 2 + ... + 2^2014)^0 =
- 3 + 2 × 1 =
- 3 + 2 =
- 1
( orice numar la puterea 0 este 1)
d) ( - 1 ) ^1 × ( - 1)^2 × ... × ( - 1)^2014 =
( - 1 ) ^ ( 1 + 2 + ...+ 2014) =
( - 1 ) ^ ( 2014 × 2015 : 2) =
( - 1 ) ^ ( 1007 × 2015) =
- 1
ultima cifra a produsului (1007 × 2015) = 5 (numar impar)
