[tex] {x}^{2} = 27 - 10 \sqrt{2} [/tex]
[tex] {x}^{2} - 27 = - 10 \sqrt{2} [/tex]
[tex] {x}^{2} - 27 + 10 \sqrt{2} = 0[/tex]
[tex] {x}^{2} + 10 \sqrt{2} - 27 = 0[/tex]
[tex]x = \frac{0 ± \sqrt{ {0}^{2} - 4}(10 \sqrt{2 - 27)} }{2} [/tex]
[tex]x = \frac{0 ± \sqrt{ { - 4}^{2} }(10 \sqrt{2} + 27 }{2} [/tex]
[tex]x = \frac{0± \sqrt{108 - 40 \sqrt{2} } }{2} [/tex]
[tex]x = \frac{0±(10 - 2 \sqrt{2} }{2} [/tex]
[tex]x = 5 - \sqrt{2} [/tex]
[tex]x = \sqrt{2 } - 5[/tex]
Sper ca ti-am fost de folos. Succes!!!!
