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

Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

x\left(x+5\right)=0
Tauwehea te x.
x=0 x=-5
Hei kimi otinga whārite, me whakaoti te x=0 me te x+5=0.
x^{2}+5x=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{-5±\sqrt{5^{2}}}{2}
Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 1 mō a, 5 mō b, me 0 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{-5±5}{2}
Tuhia te pūtakerua o te 5^{2}.
x=\frac{0}{2}
Nā, me whakaoti te whārite x=\frac{-5±5}{2} ina he tāpiri te ±. Tāpiri -5 ki te 5.
x=0
Whakawehe 0 ki te 2.
x=-\frac{10}{2}
Nā, me whakaoti te whārite x=\frac{-5±5}{2} ina he tango te ±. Tango 5 mai i -5.
x=-5
Whakawehe -10 ki te 2.
x=0 x=-5
Kua oti te whārite te whakatau.
x^{2}+5x=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}+5x+\left(\frac{5}{2}\right)^{2}=\left(\frac{5}{2}\right)^{2}
Whakawehea te 5, te tau whakarea o te kīanga tau x, ki te 2 kia riro ai te \frac{5}{2}. Nā, tāpiria te pūrua o te \frac{5}{2} ki ngā taha e rua o te whārite. Mā konei e pūrua tika tonu ai te taha mauī o te whārite.
x^{2}+5x+\frac{25}{4}=\frac{25}{4}
Pūruatia \frac{5}{2} mā te pūrua i te taurunga me te tauraro o te hautanga.
\left(x+\frac{5}{2}\right)^{2}=\frac{25}{4}
Tauwehea x^{2}+5x+\frac{25}{4}. 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+\frac{5}{2}\right)^{2}}=\sqrt{\frac{25}{4}}
Tuhia te pūtakerua o ngā taha e rua o te whārite.
x+\frac{5}{2}=\frac{5}{2} x+\frac{5}{2}=-\frac{5}{2}
Whakarūnātia.
x=0 x=-5
Me tango \frac{5}{2} mai i ngā taha e rua o te whārite.