👤

18. Rezultatul calculului:
a) 7 • [7^4-7 (7^3-7^5 : 7³)] - 7^4 =??
b) [(5²)5: 5^7-5^0-5^2] : 11 + 1^2019 = ???
c) (3^4-2^4-5)^2019 - (4^3-2^6)^2020+2^1^5 - 7^0^5

REPEDE PLSS ​