Odpowiedź :
0 = [tex]\sqrt{2}[/tex]x - 2
2 = [tex]\sqrt{2}[/tex]x /:([tex]\sqrt{2}[/tex])
2/[tex]\sqrt{2}[/tex] = x
2/[tex]\sqrt{2}[/tex] * [tex]\sqrt{2}[/tex]/[tex]\sqrt{2}[/tex] = x
2[tex]\sqrt{2}[/tex]/2 = x
[tex]\sqrt{2}[/tex] = x
0 = [tex]\sqrt{2}[/tex]x - 2
2 = [tex]\sqrt{2}[/tex]x /:([tex]\sqrt{2}[/tex])
2/[tex]\sqrt{2}[/tex] = x
2/[tex]\sqrt{2}[/tex] * [tex]\sqrt{2}[/tex]/[tex]\sqrt{2}[/tex] = x
2[tex]\sqrt{2}[/tex]/2 = x
[tex]\sqrt{2}[/tex] = x