Whakaoti i te 5a*2a=(3+5)+2

$$5 a \times 2 a = ( 3 + 5 ) + 2$$

Whakaoti mō a

$$a=1$$

$$a=-1$$

Ngā Upane mā te Kimi Pūtakerua

Whakareatia te a ki te a, ka a^{2}.

$$5a^{2}\times 2=3+5+2$$

Whakareatia te 5 ki te 2, ka 10.

$$10a^{2}=3+5+2$$

Tāpirihia te 3 ki te 5, ka 8.

$$10a^{2}=8+2$$

Tāpirihia te 8 ki te 2, ka 10.

$$10a^{2}=10$$

Whakawehea ngā taha e rua ki te 10.

$$a^{2}=\frac{10}{10}$$

Whakawehea te 10 ki te 10, kia riro ko 1.

$$a^{2}=1$$

Tuhia te pūtakerua o ngā taha e rua o te whārite.

$$a=1 a=-1$$

Ngā Upane e Whakamahi ana i te Tikanga Tātai Pūrua

Whakareatia te a ki te a, ka a^{2}.

$$5a^{2}\times 2=3+5+2$$

Whakareatia te 5 ki te 2, ka 10.

$$10a^{2}=3+5+2$$

Tāpirihia te 3 ki te 5, ka 8.

$$10a^{2}=8+2$$

Tāpirihia te 8 ki te 2, ka 10.

$$10a^{2}=10$$

Tangohia te 10 mai i ngā taha e rua.

$$10a^{2}-10=0$$

Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 10 mō a, 0 mō b, me -10 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.

$$a=\frac{0±\sqrt{0^{2}-4\times 10\left(-10\right)}}{2\times 10}$$

Pūrua 0.

$$a=\frac{0±\sqrt{-4\times 10\left(-10\right)}}{2\times 10}$$

Whakareatia -4 ki te 10.

$$a=\frac{0±\sqrt{-40\left(-10\right)}}{2\times 10}$$

Whakareatia -40 ki te -10.

$$a=\frac{0±\sqrt{400}}{2\times 10}$$

Tuhia te pūtakerua o te 400.

$$a=\frac{0±20}{2\times 10}$$

Whakareatia 2 ki te 10.

$$a=\frac{0±20}{20}$$

Nā, me whakaoti te whārite a=\frac{0±20}{20} ina he tāpiri te ±. Whakawehe 20 ki te 20.

$$a=1$$

Nā, me whakaoti te whārite a=\frac{0±20}{20} ina he tango te ±. Whakawehe -20 ki te 20.

$$a=-1$$

Kua oti te whārite te whakatau.

$$a=1 a=-1$$