Whakaoti i te a^2-4a=

$$a ^ { 2 } - 4 a =$$

Tauwehe

$$a\left(a-4\right)$$

Ngā Upane Otinga

Tauwehea te a.

$$a\left(a-4\right)$$

Ngā Upane e Whakamahi ana i te Tikanga Tātai Pūrua

Ka taea te huamaha pūrua te tauwehe mā te whakamahi i te huringa ax^{2}+bx+c=a\left(x-x_{1}\right)\left(x-x_{2}\right), ina ko x_{1} me x_{2} ngā otinga o te whārite pūrua ax^{2}+bx+c=0.

$$a^{2}-4a=0$$

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.

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

Tuhia te pūtakerua o te \left(-4\right)^{2}.

$$a=\frac{-\left(-4\right)±4}{2}$$

Ko te tauaro o -4 ko 4.

$$a=\frac{4±4}{2}$$

Nā, me whakaoti te whārite a=\frac{4±4}{2} ina he tāpiri te ±. Tāpiri 4 ki te 4.

$$a=\frac{8}{2}$$

Whakawehe 8 ki te 2.

$$a=4$$

Nā, me whakaoti te whārite a=\frac{4±4}{2} ina he tango te ±. Tango 4 mai i 4.

$$a=\frac{0}{2}$$

Whakawehe 0 ki te 2.

$$a=0$$

Tauwehea te kīanga taketake mā te whakamahi i te ax^{2}+bx+c=a\left(x-x_{1}\right)\left(x-x_{2}\right). Me whakakapi te 4 mō te x_{1} me te 0 mō te x_{2}.

$$a^{2}-4a=\left(a-4\right)a$$

Aromātai

$$a\left(a-4\right)$$