Răspuns :
[tex]a {x}^{2} = a \: | \div a[/tex]
[tex] {x}^{2} = 1[/tex]
[tex]x = \pm \sqrt{1} [/tex]
[tex]x = \pm1[/tex]
[tex] {x}^{2} = 1[/tex]
[tex]x = \pm \sqrt{1} [/tex]
[tex]x = \pm1[/tex]