1.
[tex]1-|-34 + x| =-56\\\\-|-34 + x| =-56-1\\\\-|-34 + x| =-57\ \ \ |:(-1)\\\\|-34+x|=57\\\\-34+x=57\ \ \ lub\ \ \ -34+x=-57\\\\x=57+34\ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-57+34\\\\x=91\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-23[/tex]
2.
[tex]|(\sqrt{7} - \sqrt{3})(\sqrt{3} + \sqrt{7})| - 4(\sqrt{20} - 2|\sqrt{5} -1|)=\\\\|7-3| - 4(\sqrt{20} - 2(\sqrt{5} -1))=|4|-4(2\sqrt5-2\sqrt5+2)=4-8=-4[/tex]
