Question

Explicati modulul |12+4x|

Answer 1

sper ca te am ajutat. o zi frumoasa

Answer 2

$\it 12+4x<0 \Rightarrow 4x<-12|_{:4} \Rightarrow x<-3 \Rightarrow x\in (-\infty,\ -3)\ \ \ \ \ (1)\\ \\ 12+4x\geq0 \Rightarrow 4x\geq-12|_{:4} \Rightarrow x\geq-3 \Rightarrow x\in [-3,\ \infty)\ \ \ \ \ \ \ (2)\\ \\ \\ (1),\ (2) \Rightarrow |12+4x|=\begin{cases} \it -12-4x,\ pentru\ x\in(-\infty,\ -3)\\ \\ \it\ \ 12+4x,\ pentru\ x\in[-3,\ \infty)\end{cases}$