a)|x|=4
x=-4
x=4
[tex]b) |x| = \sqrt{5} [/tex]
[tex]x = \sqrt{5} [/tex]
[tex]x = - \sqrt{5} [/tex]
[tex] c)|x - 1| = \sqrt{2} [/tex]
[tex]x - 1 = \sqrt{2} [/tex]
[tex]x - 1 = - \sqrt{2} [/tex]
[tex]x = \sqrt{2 } + 1[/tex]
[tex]x = - \sqrt{2} + 1[/tex]