[tex]7^{17}:7^{13}-7^3+13^0=7^{17-13}-7^3+1=7^4-7^3+1=2058+1=2059\\
(11+4)^{22}:15^{20}-15^0=15^{22}:15^{20}-1=15^{22-20}-1=15^{2}-1=224\\
(42:14)^2\cdot9^{18}:27^6=3^2\cdot(3^2)^{18}:(3^3)^6=3^2\cdot 3^{36}:3^{18}=\\
=3^{2+36-18}=3^{20}
[/tex]
Observatie: Am modificat un pic enuntul la F) si cred ca am procedat corect.
