Question

Determinati nr natural n stiind ca : 2 la puterea n+3 +2 la puterea n+1+ 2 la puterea n= 88

Answer 1

2 la puterea n ( 2 la puterea 1 + 2 la puterea 3 + 1) = 88
2 la puterea n x 11 = 88
2 la puterea n =88 : 11
2 la puterea n = 8 = 2 la puterea a 3
2 la putera n = 2 la putera a 3     rezulta ca n= 3