Răspunsuri

2014-11-01T17:33:22+02:00
2 la puterea n +2la puterea n+2=  2^{n} *(1+4)= 2^{n} *5


4 la puterea n +2la puterea 2n+1= 2^{2n}  2^{2n+1} = 2^{2n} *(1+2)= 2^{2n} *3