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Tohaina

5\left(x+x^{2}+1\right)
Tauwehea te 5. Kāore te pūrau x+x^{2}+1 i whakatauwehea i te mea kāhore ōna pūtake whakahau.
5x^{2}+5x+5=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.
x=\frac{-5±\sqrt{5^{2}-4\times 5\times 5}}{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.
x=\frac{-5±\sqrt{25-4\times 5\times 5}}{2\times 5}
Pūrua 5.
x=\frac{-5±\sqrt{25-20\times 5}}{2\times 5}
Whakareatia -4 ki te 5.
x=\frac{-5±\sqrt{25-100}}{2\times 5}
Whakareatia -20 ki te 5.
x=\frac{-5±\sqrt{-75}}{2\times 5}
Tāpiri 25 ki te -100.
5x^{2}+5x+5
Tā te mea e kore te pūrua o tētahi tau tōraro e tautohutia ki te āpure tūturu, kāhore he rongoā. Kāore e taea te pūrau pūrua te whakatauwehe.