Question

AJUTATI-MA URGENT! DAU FUNDITA
Calculati:
(2,5) la n = 125 supra 8.

Answer 1

$2,5^n=\frac{125}{8}$

$(\frac{5}{2})^n=\frac{125}{8}$

$\frac{5^n}{2^n}=\frac{125}{8}$

$n=3$

Answer 2

(2,5)^n=125/8
(25/10)^n = (5)^3/(2)^3
(25/10)^n = (5/2)^3
(25/10) se simplifica cu 5 si avem
(5/2)^n = (5/2)^3
deci n = 3