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5|(2 ^ n+1 • 3 ^ n + 2 la puterea n•3^ n + 1)
AJUTOR PLEASSEEEEE
((^= la puterea))​


Răspuns :

Explicație pas cu pas:

2^(n+1)*3^n+2^n*3^(n+1)=

2^n*2*3^n+2^n*3^n*3=

6^n*2+6^n*3=6^n(2+3)=5*6^n

5|6^n*5 (A)