Whakaoti i te 3x^2+5x

$$3 x ^ { 2 } + 5 x$$

Tauwehe

$$x\left(3x+5\right)$$

Ngā Upane Otinga

Tauwehea te x.

$$x\left(3x+5\right)$$

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.

$$3x^{2}+5x=0$$

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.

$$x=\frac{-5±\sqrt{5^{2}}}{2\times 3}$$

Tuhia te pūtakerua o te 5^{2}.

$$x=\frac{-5±5}{2\times 3}$$

Whakareatia 2 ki te 3.

$$x=\frac{-5±5}{6}$$

Nā, me whakaoti te whārite x=\frac{-5±5}{6} ina he tāpiri te ±. Tāpiri -5 ki te 5.

$$x=\frac{0}{6}$$

Whakawehe 0 ki te 6.

$$x=0$$

Nā, me whakaoti te whārite x=\frac{-5±5}{6} ina he tango te ±. Tango 5 mai i -5.

$$x=-\frac{10}{6}$$

Whakahekea te hautanga \frac{-10}{6} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$x=-\frac{5}{3}$$

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 0 mō te x_{1} me te -\frac{5}{3} mō te x_{2}.

$$3x^{2}+5x=3x\left(x-\left(-\frac{5}{3}\right)\right)$$

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

$$3x^{2}+5x=3x\left(x+\frac{5}{3}\right)$$

Tāpiri \frac{5}{3} ki te x mā te kimi i te tauraro pātahi me te tāpiri i ngā taurunga. Ka whakaiti i te hautanga ki ngā kīanga tau iti rawa e taea ana.

$$3x^{2}+5x=3x\times \frac{3x+5}{3}$$

Whakakorea atu te tauwehe pūnoa nui rawa 3 i roto i te 3 me te 3.

$$3x^{2}+5x=x\left(3x+5\right)$$

Aromātai

$$x\left(3x+5\right)$$