Explicație pas cu pas:
[tex]0.(3) {x}^{2} = \frac{27}{256} \\ \frac{{x}^{2} }{3} = \frac{27}{256} < = > {x}^{2} = \frac{81}{256} \\ {x}^{2} = \frac{ {9}^{2} }{ {16}^{2} } = {( \frac{9}{16} )}^{2} \\ x = \frac{9}{16} \: \: sau \: \: x = - \frac{9}{16} [/tex]
