źródło:
a)
2^{-6} * 2^8=2^{-6+8}=2^2=4 b) (-3)^{14}:3^{-7} * 3^{-19}=3^{14}:3^{-7} * 3^{19}=3^{14-(-7)+(-19)}=3^{14+7-19}=3^2=9 c) (5^{-3})^4:5^{-15}=5^{-12}:5^{-15}=5^{-12-(-15)}=5^{-12+15}=5^3=125