Determinati numarul n,astfel incat:(0,5) la puterea 2n+3 = 1/512

Răspuns :

(0,5)^(2n+3)= (1/2)^9= 0,5^9
2n+3=9
2n=9-3
n=6/2
n=3
(1/2)^(2n+3)=(1/2)^9
2^(2n+3)=2^9
2n+3=9
2n=6
n=3