Question

20 de puncte!! Calculati: | |2x + 1 | -3| =0


Va rog frumos sa ma jutati!!

Answer 1

$\rm ||2x+1|-3|=0 \\ \\ |2x+1|-3=0 \\ \\ |2x+1|=3 \\ \\ 2x+1 \in \{3;~-3\}|-1 \\ \\ 2x \in \{2;~-4\}|:2 \\ \\ \boxed{\rm x \in 1;~-2\)}$