Question

Determinati numarul natural x , stiind ca : 2 la 31 +2 la 30+ 2 la 29 = X x 2 la 28 . x = ori . Multumesc ! :3

Answer 1

2³¹ +2³⁰+ 2²⁹ = X x 2²⁸
2²⁸(2³ +2²+ 2) = X x 2²⁸
8 +4+ 2 = X
X=14

Answer 2

$2^{31}+2^{30}+2^{29}=X*2^{28} \\ 2^{28}(2^{3}+2^{2}+2)=2^{28}*x \\ 2^{28}*(8+4+2)=2^{28}*x \\2^28*14=2^{28}*x \\ x=14$

avem exponentii egali si de acolo il scoti pe x.