Question

Va rog frumos cine ma puate ajuta 2 la puterea x+1 mai mic sau egal cu 16

Answer 1

$2^{x+1} \leq 2^{4}$
2>1 => se pastreaza inegalitatea
x+1≤4
x≤3 ⇒ x ∈ (-∞,3]

Answer 2

$2^{x+1} \leq 16 \\ \\ 2^{x+1} \leq 2^4 \\ \\ x+1 \leq 4 \\ \\ x \leq 4-1 \\ \\ x \leq 3 \Rightarrow x \in (- \infty,~3]$