Whakaoti mō x
x=28
x=0
Graph
Tohaina
Kua tāruatia ki te papatopenga
x\left(x-28\right)=0
Tauwehea te x.
x=0 x=28
Hei kimi otinga whārite, me whakaoti te x=0 me te x-28=0.
x^{2}-28x=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(-28\right)±\sqrt{\left(-28\right)^{2}}}{2}
Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 1 mō a, -28 mō b, me 0 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{-\left(-28\right)±28}{2}
Tuhia te pūtakerua o te \left(-28\right)^{2}.
x=\frac{28±28}{2}
Ko te tauaro o -28 ko 28.
x=\frac{56}{2}
Nā, me whakaoti te whārite x=\frac{28±28}{2} ina he tāpiri te ±. Tāpiri 28 ki te 28.
x=28
Whakawehe 56 ki te 2.
x=\frac{0}{2}
Nā, me whakaoti te whārite x=\frac{28±28}{2} ina he tango te ±. Tango 28 mai i 28.
x=0
Whakawehe 0 ki te 2.
x=28 x=0
Kua oti te whārite te whakatau.
x^{2}-28x=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}-28x+\left(-14\right)^{2}=\left(-14\right)^{2}
Whakawehea te -28, te tau whakarea o te kīanga tau x, ki te 2 kia riro ai te -14. Nā, tāpiria te pūrua o te -14 ki ngā taha e rua o te whārite. Mā konei e pūrua tika tonu ai te taha mauī o te whārite.
x^{2}-28x+196=196
Pūrua -14.
\left(x-14\right)^{2}=196
Tauwehea x^{2}-28x+196. 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-14\right)^{2}}=\sqrt{196}
Tuhia te pūtakerua o ngā taha e rua o te whārite.
x-14=14 x-14=-14
Whakarūnātia.
x=28 x=0
Me tāpiri 14 ki ngā taha e rua o te whārite.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
whārite paerangi
y = 3x + 4
Arithmetic
699 * 533
Poukapa
\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]
whārite Simultaneous
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Whakarerekētanga
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}