Question

determinati n pt care au loc egalitatile:
15 la puterea n+2: 5 la puterea n+2=9 ¹°

Answer 1

15^(n+2) : 5^(n+2)=9^10
3^(n+2) x 5^(n+2) : 5^(n+2)=3^20
3^(n+2) =3^20
n+2=20
n=20-2
n=18