Ecuatii

Licuricy Sam Noi 05, 2011 5:20 pm

Am obtinut la o ecutia cu determinanti urmatorul rezultat $x^{4}-x^2-2x+2=0$ si nu stiu cum sa-l aflu pe x

**Admin** Sam Noi 05, 2011 9:27 pm

Licuricy a scris: $x^{4}-x^2-2x+2=0$

${x^4} - {x^2} - 2x + 2 = 0 \Leftrightarrow {\left( {x - 1} \right)^2}\left( {{x^2} + 2x + 2} \right) = 0 \Rightarrow \left\{ \begin{array}{l} {\left( {x - 1} \right)^2} = 0\\ \left( {{x^2} + 2x + 2} \right) = 0 \end{array} \right. \Rightarrow \left\{ \begin{array}{l} {x_1} = ....\\ {x_2} = ....\\ {x_3} = ....\\ {x_4} = .... \end{array} \right.$

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