va rog e urgent doar a si b

Răspuns:
a)0.2³= 0.2*0.2*0.2=0.04*0.2=0.008 . q.e.d
b)0.008⁵*0.04⁵*0.2⁵=(0.2³)⁵*(0.2²)⁵*0.2⁵=0.2¹⁵*0.2¹⁰*0.2⁵=0.2³⁰