Question

urgent!!! repede dau coroana​

Answer 1

Răspuns:

b) $(7^{2} )^{19} : 7^{20}$= $7^{2*19} :7^{20}$= $7^{38} : 7^{20} = 7^{38-20} = 7^{18}$

c) $(8^{2})^{10}: 8^{17} = 8^{2*10} : 8^{17} = 8^{20} : 8^{17} =8^{20-17} =8^{3}$