[tex] x^{2} =15[/tex]
[tex] \sqrt{x^2}= \sqrt{15} [/tex]
[tex]x= +or-\sqrt{15} [/tex]
[tex] x^{2} =20[/tex]
[tex] \sqrt{x^2} = \sqrt{20}[/tex]
[tex]x= + or - \sqrt{20} [/tex]
[tex] x^{2} =48[/tex]
[tex] \sqrt{x^2}= \sqrt{48} [/tex]
[tex]x= +or- \sqrt{48} [/tex]
P.S. :The given equations can't be factored so I used "Extracting the Roots" method. ^_^ \/
