Question

Rezolvati in multimea numerelor reale ecuatia :

$2^{x-1}+1=5$

Answer 1

Răspuns: 2ˣ⁺¹ = 5-1

                2ˣ⁺¹ = 4 => 2ˣ⁺¹ = 2² => x+1 = 2/-1 => x=1