Question

determinati numarul natural N stiind ca 2 la puterea 9 +2 la puterea 10+2la puterea11=N ori 2 la puterea9

Answer 1

2^9 + 2^10 + 2^11 = N x 2^9

2^9 x (1 + 2 + 2^2) = N x 2^9

2^9 x 7 = N x 2^9

N = 7