Question

Cum se rezolva exercitiul $2^{n}$ + $2^{n+1}$ = 24 ?

Answer 1

2^n+2^(n+1)=24            scoti factor comun pe 2^n

2^n * (1+2)=24

3* 2^n=24         /:3

2^n=8

2^3=8⇒⇒⇒ n=3