Whakaoti i te a^2+2a+1

$$a ^ { 2 } + 2 a + 1$$

Tauwehe

$$\left(a+1\right)^{2}$$

Ngā Upane Otinga

Whakatauwehea te kīanga mā te whakarōpū. Tuatahi, me tuhi anō te kīanga hei a^{2}+pa+qa+1. Hei kimi p me q, whakaritea tētahi pūnaha kia whakaoti.

$$p+q=2 pq=1\times 1=1$$

I te mea kua tōrunga te pq, he ōrite te tohu o p me q. I te mea kua tōrunga te p+q, he tōrunga hoki a p me q. Ko te takirua anake pērā ko te otinga pūnaha.

$$p=1 q=1$$

Tuhia anō te a^{2}+2a+1 hei \left(a^{2}+a\right)+\left(a+1\right).

$$\left(a^{2}+a\right)+\left(a+1\right)$$

Whakatauwehea atu a i te a^{2}+a.

$$a\left(a+1\right)+a+1$$

Whakatauwehea atu te kīanga pātahi a+1 mā te whakamahi i te āhuatanga tātai tohatoha.

$$\left(a+1\right)\left(a+1\right)$$

Tuhia anōtia hei pūrua huarua.

$$\left(a+1\right)^{2}$$

Ngā Upane Whakamahi Tauwehe o te Pūrua Huarua

Ko te tikanga tātai o tēnei huatoru he pūrua huatoru, ka whakareatia pea e tētahi tauwehe pātahi. Ka taea ngā pūrua huatoru te tauwehe mā te kimi i ngā pūtakerua o ngā kīanga tau ārahi, autō hoki.

$$factor(a^{2}+2a+1)$$

Ko te pūrua huatoru te pūrua o te huarua ko te tapeke tērā, te huatango rānei o ngā pūtakerua o ngā kīanga tau ārahi, autō hoki, e whakaritea ai te tohu e te tohu o te kīanga tau waenga o te pūrua huatoru.

$$\left(a+1\right)^{2}$$

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.

$$a^{2}+2a+1=0$$

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.

$$a=\frac{-2±\sqrt{2^{2}-4}}{2}$$

Pūrua 2.

$$a=\frac{-2±\sqrt{4-4}}{2}$$

Tāpiri 4 ki te -4.

$$a=\frac{-2±\sqrt{0}}{2}$$

Tuhia te pūtakerua o te 0.

$$a=\frac{-2±0}{2}$$

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 -1 mō te x_{1} me te -1 mō te x_{2}.

$$a^{2}+2a+1=\left(a-\left(-1\right)\right)\left(a-\left(-1\right)\right)$$

Whakamāmātia ngā kīanga katoa o te āhua p-\left(-q\right) ki te p+q.

$$a^{2}+2a+1=\left(a+1\right)\left(a+1\right)$$

Aromātai

$$\left(a+1\right)^{2}$$