Whakaoti mō x
x=1
x=2
x=-1
Graph
Tohaina
Kua tāruatia ki te papatopenga
±2,±1
Tā te Rational Root Theorem, ko ngā pūtake whakahau katoa o tētahi pūrau kei te āhua o \frac{p}{q}, ina wehea e p te kīanga pūmau 2, ā, ka wehea e q te whakarea arahanga 1. Whakarārangitia ngā kaitono katoa \frac{p}{q}.
x=1
Kimihia tētahi pūtake pērā mā te whakamātau i ngā uara tau tōpū katoa, e tīmata ana i te mea iti rawa mā te uara pū. Mēnā kāore he pūtake tau tōpū e kitea, whakamātauria ngā hautanga.
x^{2}-x-2=0
Mā te whakatakotoranga Tauwehe, he tauwehe te x-k o te pūrau mō ia pūtake k. Whakawehea te x^{3}-2x^{2}-x+2 ki te x-1, kia riro ko x^{2}-x-2. Whakaotihia te whārite ina ōrite te hua ki te 0.
x=\frac{-\left(-1\right)±\sqrt{\left(-1\right)^{2}-4\times 1\left(-2\right)}}{2}
Ka taea ngā whārite katoa o te momo ax^{2}+bx+c=0 te whakaoti mā te ture pūrua: \frac{-b±\sqrt{b^{2}-4ac}}{2a}. Whakakapia te 1 mō te a, te -1 mō te b, me te -2 mō te c i te ture pūrua.
x=\frac{1±3}{2}
Mahia ngā tātaitai.
x=-1 x=2
Whakaotia te whārite x^{2}-x-2=0 ina he tōrunga te ±, ina he tōraro te ±.
x=1 x=-1 x=2
Rārangitia ngā otinga katoa i kitea.
Ngā Tauira
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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Ngā Tepe
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