👤
Nikoletarotaru
a fost răspuns

5^20+5^20+5^20+5^20=5^21-5^n
Ajutor vă rog, merci anticipat.
2^5+2^6+2^8=11×2^n

Răspuns :

Renatemambouko
5^20+5^20+5^20+5^20=5^21-5^n
5^n =5^21-(5^20+5^20+5^20+5^20)
5^n=5^20×(5^1-1-1-1-1)
5^n=5^20
n=20

2^5+2^6+2^8=11×2^n
2^5×(1+2+2^3)=11×2^n
2^5×(1+2+8)=11×2^n
2^5 × 11=11×2^n
2^5=2^n
n=5








Alte intrebari