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Calculați : 2la puterea n+1 ori 3 la puterea n +2 la puterea n ori 3 la puterea n +1

Răspuns :

2^n+1*3^n+2^n*3^n+1
2^n (1*3^n+2^n *3^n+1)=2^n+1*3+2+1=2^n+9+2+1
2^n*12