Zadanie 1.
[tex]A=\{1,3,5,7,9\}[/tex]
Uprośćmy zbiór B.
[tex]x+5<10\\x<10-5\\x<5[/tex]
[tex]B=\{x\in\mathbb{N}:x+5<10\}=\{0,1,2,3,4\}[/tex]
Teraz
[tex]A\cup B=\{0,1,2,3,4,5,7,9\}\\A\cap B=\{1,3\}\\A\backslash B=\{5,7,9\}\\B\backslash A=\{0,2,4\}[/tex]
Zadanie 2.
[tex]A\cup B=(-\infty,7)\\A\cap B=(-4,1>\\A\backslash B=(-\infty,-4>\\B\backslash A=(1,7)[/tex]
