Danielaciobanu878id Danielaciobanu878id Matematică a fost răspuns Ex 8 pag 63. Calculati :(5^0+5^1+5^2 +5^3)÷2 ^2; b: (7^0+7^1+7^2-3^2)÷2 ^4 C) (2^0+2^1+2^2+2^3+3^2)÷2 ^2: d) (3^0+3^1+3^2+3 ^3-2^3)÷2 ^3