Whakaoti mō x (complex solution)
x=1+3i
x=1-3i
Graph
Tohaina
Kua tāruatia ki te papatopenga
x^{2}-2x+10=0
Ko ngā whārite katoa o te āhua ax^{2}+bx+c=0 ka taea te whakaoti mā te whakamahi i te tikanga tātai pūrua: \frac{-b±\sqrt{b^{2}-4ac}}{2a}. E rua ngā otinga ka puta i te tikanga tātai pūrua, ko tētahi ina he tāpiri a ±, ā, ko tētahi ina he tango.
x=\frac{-\left(-2\right)±\sqrt{\left(-2\right)^{2}-4\times 10}}{2}
Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 1 mō a, -2 mō b, me 10 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{-\left(-2\right)±\sqrt{4-4\times 10}}{2}
Pūrua -2.
x=\frac{-\left(-2\right)±\sqrt{4-40}}{2}
Whakareatia -4 ki te 10.
x=\frac{-\left(-2\right)±\sqrt{-36}}{2}
Tāpiri 4 ki te -40.
x=\frac{-\left(-2\right)±6i}{2}
Tuhia te pūtakerua o te -36.
x=\frac{2±6i}{2}
Ko te tauaro o -2 ko 2.
x=\frac{2+6i}{2}
Nā, me whakaoti te whārite x=\frac{2±6i}{2} ina he tāpiri te ±. Tāpiri 2 ki te 6i.
x=1+3i
Whakawehe 2+6i ki te 2.
x=\frac{2-6i}{2}
Nā, me whakaoti te whārite x=\frac{2±6i}{2} ina he tango te ±. Tango 6i mai i 2.
x=1-3i
Whakawehe 2-6i ki te 2.
x=1+3i x=1-3i
Kua oti te whārite te whakatau.
x^{2}-2x+10=0
Ko ngā whārite pūrua pēnei i tēnei nā ka taea te whakaoti mā te whakaoti i te pūrua. Hei whakaoti i te pūrua, ko te whārite me mātua tuhi ki te āhua x^{2}+bx=c.
x^{2}-2x+10-10=-10
Me tango 10 mai i ngā taha e rua o te whārite.
x^{2}-2x=-10
Mā te tango i te 10 i a ia ake anō ka toe ko te 0.
x^{2}-2x+1=-10+1
Whakawehea te -2, te tau whakarea o te kīanga tau x, ki te 2 kia riro ai te -1. Nā, tāpiria te pūrua o te -1 ki ngā taha e rua o te whārite. Mā konei e pūrua tika tonu ai te taha mauī o te whārite.
x^{2}-2x+1=-9
Tāpiri -10 ki te 1.
\left(x-1\right)^{2}=-9
Tauwehea x^{2}-2x+1. Ko te tikanga pūnoa, ina ko x^{2}+bx+c he pūrua tika pūrua tika pū, ka taea taua mea te tauwehea i ngā wā katoa hei \left(x+\frac{b}{2}\right)^{2}.
\sqrt{\left(x-1\right)^{2}}=\sqrt{-9}
Tuhia te pūtakerua o ngā taha e rua o te whārite.
x-1=3i x-1=-3i
Whakarūnātia.
x=1+3i x=1-3i
Me tāpiri 1 ki ngā taha e rua o te whārite.
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