Tīpoka ki ngā ihirangi matua
Whakaoti mō x
Tick mark Image
Graph

Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

55=6x+x^{2}
Whakamahia te āhuatanga tohatoha hei whakarea te 6+x ki te x.
6x+x^{2}=55
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
6x+x^{2}-55=0
Tangohia te 55 mai i ngā taha e rua.
x^{2}+6x-55=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{-6±\sqrt{6^{2}-4\left(-55\right)}}{2}
Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 1 mō a, 6 mō b, me -55 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{-6±\sqrt{36-4\left(-55\right)}}{2}
Pūrua 6.
x=\frac{-6±\sqrt{36+220}}{2}
Whakareatia -4 ki te -55.
x=\frac{-6±\sqrt{256}}{2}
Tāpiri 36 ki te 220.
x=\frac{-6±16}{2}
Tuhia te pūtakerua o te 256.
x=\frac{10}{2}
Nā, me whakaoti te whārite x=\frac{-6±16}{2} ina he tāpiri te ±. Tāpiri -6 ki te 16.
x=5
Whakawehe 10 ki te 2.
x=-\frac{22}{2}
Nā, me whakaoti te whārite x=\frac{-6±16}{2} ina he tango te ±. Tango 16 mai i -6.
x=-11
Whakawehe -22 ki te 2.
x=5 x=-11
Kua oti te whārite te whakatau.
55=6x+x^{2}
Whakamahia te āhuatanga tohatoha hei whakarea te 6+x ki te x.
6x+x^{2}=55
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x^{2}+6x=55
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}+6x+3^{2}=55+3^{2}
Whakawehea te 6, te tau whakarea o te kīanga tau x, ki te 2 kia riro ai te 3. Nā, tāpiria te pūrua o te 3 ki ngā taha e rua o te whārite. Mā konei e pūrua tika tonu ai te taha mauī o te whārite.
x^{2}+6x+9=55+9
Pūrua 3.
x^{2}+6x+9=64
Tāpiri 55 ki te 9.
\left(x+3\right)^{2}=64
Tauwehea x^{2}+6x+9. 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+3\right)^{2}}=\sqrt{64}
Tuhia te pūtakerua o ngā taha e rua o te whārite.
x+3=8 x+3=-8
Whakarūnātia.
x=5 x=-11
Me tango 3 mai i ngā taha e rua o te whārite.