Odpowiedź:
[tex]{x}^{2} = t \\ {t}^{2} + t - 6 = 0 \\ t = - 3 \\ t = 2 \\ {x}^{2} = - 3 \\ {x}^{2} = 2 \\ rownanie \: ma \: dwa \: rozwiazama \\ x= - \sqrt{2} \\ x = \sqrt{2} [/tex]
