Đáp án:
$\displaystyle \begin{array}{{>{\displaystyle}l}} A\cup B=( -2;3]\\ C_{\mathbb{R}}^{A} =( -\infty ;-2] \cup ( 3;+\infty )\\ A\cap B=[ 1;3)\\ A\backslash B=3\\ C_{\mathbb{R}}^{A\backslash B} =( -\infty ;+\infty ) \backslash 3 \end{array}$
Giải thích các bước giải:
$\displaystyle \begin{array}{{>{\displaystyle}l}} A=( -2;3] ;\ B=[ 1;3)\\ A\cup B=( -2;3]\\ C_{\mathbb{R}}^{A} =( -\infty ;-2] \cup ( 3;+\infty )\\ A\cap B=[ 1;3)\\ A\backslash B=3\\ C_{\mathbb{R}}^{A\backslash B} =( -\infty ;+\infty ) \backslash 3 \end{array}$
