Question

Va rog mult dau coroana!​

Answer 1

$\it 6x-4 < 2(6+x) \Rightarrow 6x-4 < 12+2x \Rightarrow 6x-2x < 12+4 \Rightarrow 4x < 16\Big|_{:4} \Rightarrow \\ \\ \Rightarrow x < 4\ \stackrel{x\in\mathbb{N}}{\Longrightarrow}\ A=\{0,\ \ 1,\ \ 2,\ \ 3\}\\ \\ \\ 24\ \vdots\ (3x+2) \Rightarrow 3x+2\in D_{24} \Rightarrow 3x+2\in\{1,\ 2,\ 3,\ 4,\ 6,\ 8,\ 12,\ 24\}\Big|_{-2} \Rightarrow \\ \\ 3x\in\{-1,\ 0,\ 1,\ 2,\ 4,\ 6,\ 10,\ 22\}\Big|_{:3}\ \stackrel{x\in\mathbb{N}}{\Longrightarrow}\ B=\{0,\ 2\}$

Answer 2

Răspuns:

Explicație pas cu pas: