👤

8 la puterea n + 8 la puterea n+1 = 18 ori 2 la puterea 2003! URGENTTTTTTTTT

Răspuns :

8^n + 8^n+1 = 18 × 2^2003

8^n + 8^n × 8^1 = 18 × 2^2003

8^n × ( 1 + 8) = 18 × 2^2003

8^n × 9 = 18 × 2^2003 | : 9

8^n = 2 × 2^2003

2^3n = 2^2004

3n = 2004

n = 2004 : 3

n = 668
______