7.
[tex]4^9 = (2*2)^9 = 4 * 4^8[/tex]
Odp. D
8.
[tex](4^8)^2:(2^{10})^2=4^{16} : 2^{20} = (2^2)^{16} : 2^{20} = 2^{32} : 2^{20} = 2^{32-20} = 2^{12}[/tex]
Odp. C
