1.[tex]\frac{(-0,5)^{12} }{(-0,5)^{6}} *\frac{-0,5}{(-0,5)^{3}*(-0,5)^{2} }=(-0,5)^{12-6}*\frac{-0,5}{(-0,5)^{3+2}} =(-0,5)^{6}=\frac{-0,5}{(-0,5)^{5}} =(-0,5)^{6}*(-0,5)^{1-5}=(-0,5)^{6+(-4)}=(-0,5)^{2}=0,25[/tex]
0dp: B
2. [tex]17^{20} :17^{5} =17^{20-5}=17^{15}[/tex]
odp: C
3. [tex]2^{16}:2 = 2^{16-1}= 2^{15}[/tex]
odp: C