Whakaoti mō x
x=1
x=-1
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Tohaina
Kua tāruatia ki te papatopenga
3-4x^{2}-5=-6x^{2}
Tangohia te 5 mai i ngā taha e rua.
-2-4x^{2}=-6x^{2}
Tangohia te 5 i te 3, ka -2.
-2-4x^{2}+6x^{2}=0
Me tāpiri te 6x^{2} ki ngā taha e rua.
-2+2x^{2}=0
Pahekotia te -4x^{2} me 6x^{2}, ka 2x^{2}.
-1+x^{2}=0
Whakawehea ngā taha e rua ki te 2.
\left(x-1\right)\left(x+1\right)=0
Whakaarohia te -1+x^{2}. Tuhia anō te -1+x^{2} hei x^{2}-1^{2}. Ka taea te rerekētanga o ngā pūrua te whakatauwehe mā te ture: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
x=1 x=-1
Hei kimi otinga whārite, me whakaoti te x-1=0 me te x+1=0.
3-4x^{2}+6x^{2}=5
Me tāpiri te 6x^{2} ki ngā taha e rua.
3+2x^{2}=5
Pahekotia te -4x^{2} me 6x^{2}, ka 2x^{2}.
2x^{2}=5-3
Tangohia te 3 mai i ngā taha e rua.
2x^{2}=2
Tangohia te 3 i te 5, ka 2.
x^{2}=\frac{2}{2}
Whakawehea ngā taha e rua ki te 2.
x^{2}=1
Whakawehea te 2 ki te 2, kia riro ko 1.
x=1 x=-1
Tuhia te pūtakerua o ngā taha e rua o te whārite.
3-4x^{2}-5=-6x^{2}
Tangohia te 5 mai i ngā taha e rua.
-2-4x^{2}=-6x^{2}
Tangohia te 5 i te 3, ka -2.
-2-4x^{2}+6x^{2}=0
Me tāpiri te 6x^{2} ki ngā taha e rua.
-2+2x^{2}=0
Pahekotia te -4x^{2} me 6x^{2}, ka 2x^{2}.
2x^{2}-2=0
Ko ngā tikanga tātai pūrua pēnei i tēnei nā, me te kīanga tau x^{2} engari kāore he kīanga tau x, ka taea tonu te whakaoti mā te whakamahi i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}, ina tuhia ki te tānga ngahuru: ax^{2}+bx+c=0.
x=\frac{0±\sqrt{0^{2}-4\times 2\left(-2\right)}}{2\times 2}
Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 2 mō a, 0 mō b, me -2 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{0±\sqrt{-4\times 2\left(-2\right)}}{2\times 2}
Pūrua 0.
x=\frac{0±\sqrt{-8\left(-2\right)}}{2\times 2}
Whakareatia -4 ki te 2.
x=\frac{0±\sqrt{16}}{2\times 2}
Whakareatia -8 ki te -2.
x=\frac{0±4}{2\times 2}
Tuhia te pūtakerua o te 16.
x=\frac{0±4}{4}
Whakareatia 2 ki te 2.
x=1
Nā, me whakaoti te whārite x=\frac{0±4}{4} ina he tāpiri te ±. Whakawehe 4 ki te 4.
x=-1
Nā, me whakaoti te whārite x=\frac{0±4}{4} ina he tango te ±. Whakawehe -4 ki te 4.
x=1 x=-1
Kua oti te whārite te whakatau.
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