[tex] {x}^{2} = \frac{25}{81} [/tex]
[tex]x = \pm\: \sqrt{ \frac{25}{81} } [/tex]
[tex]x = \pm\: \frac{ \sqrt{25} }{ \sqrt{81} } [/tex]
[tex]x = \pm\: \frac{5}{9} [/tex]
[tex]4 {x}^{2} = \frac{9}{32} [/tex]
[tex] {x}^{2} = \frac{9}{32} \div 4[/tex]
[tex] {x}^{2} = \frac{9}{32} \times \frac{1}{4} [/tex]
[tex] {x}^{2} = \frac{9}{128} [/tex]
[tex]x = \pm\: \sqrt{ \frac{9}{128} } [/tex]
[tex]x = \pm\: \frac{ \sqrt{9} }{ \sqrt{128} } [/tex]
[tex]x = \pm\: \frac{3}{8 \sqrt{2} } [/tex]
[tex]x = \pm\: \frac{3 \sqrt{2} }{8 \sqrt{4} } [/tex]
[tex]x = \pm\: \frac{3 \sqrt{2} }{8 \times 2} [/tex]
[tex]x = \pm\: \frac{3 \sqrt{2} }{16} [/tex]
