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Tauwehe
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5\left(t^{2}+2t\right)
Tauwehea te 5.
t\left(t+2\right)
Whakaarohia te t^{2}+2t. Tauwehea te t.
5t\left(t+2\right)
Me tuhi anō te kīanga whakatauwehe katoa.
5t^{2}+10t=0
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.
t=\frac{-10±\sqrt{10^{2}}}{2\times 5}
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.
t=\frac{-10±10}{2\times 5}
Tuhia te pūtakerua o te 10^{2}.
t=\frac{-10±10}{10}
Whakareatia 2 ki te 5.
t=\frac{0}{10}
Nā, me whakaoti te whārite t=\frac{-10±10}{10} ina he tāpiri te ±. Tāpiri -10 ki te 10.
t=0
Whakawehe 0 ki te 10.
t=-\frac{20}{10}
Nā, me whakaoti te whārite t=\frac{-10±10}{10} ina he tango te ±. Tango 10 mai i -10.
t=-2
Whakawehe -20 ki te 10.
5t^{2}+10t=5t\left(t-\left(-2\right)\right)
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 -2 mō te x_{2}.
5t^{2}+10t=5t\left(t+2\right)
Whakamāmātia ngā kīanga katoa o te āhua p-\left(-q\right) ki te p+q.