Aromātai
40n^{2}-\frac{8}{5}
Whakaroha
40n^{2}-\frac{8}{5}
Tohaina
Kua tāruatia ki te papatopenga
\left(10n+2\right)\left(4n-\frac{4}{5}\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 5n+1.
40n^{2}+10n\left(-\frac{4}{5}\right)+8n+2\left(-\frac{4}{5}\right)
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 10n+2 ki ia tau o 4n-\frac{4}{5}.
40n^{2}+\frac{10\left(-4\right)}{5}n+8n+2\left(-\frac{4}{5}\right)
Tuhia te 10\left(-\frac{4}{5}\right) hei hautanga kotahi.
40n^{2}+\frac{-40}{5}n+8n+2\left(-\frac{4}{5}\right)
Whakareatia te 10 ki te -4, ka -40.
40n^{2}-8n+8n+2\left(-\frac{4}{5}\right)
Whakawehea te -40 ki te 5, kia riro ko -8.
40n^{2}+2\left(-\frac{4}{5}\right)
Pahekotia te -8n me 8n, ka 0.
40n^{2}+\frac{2\left(-4\right)}{5}
Tuhia te 2\left(-\frac{4}{5}\right) hei hautanga kotahi.
40n^{2}+\frac{-8}{5}
Whakareatia te 2 ki te -4, ka -8.
40n^{2}-\frac{8}{5}
Ka taea te hautanga \frac{-8}{5} te tuhi anō ko -\frac{8}{5} mā te tango i te tohu tōraro.
\left(10n+2\right)\left(4n-\frac{4}{5}\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 5n+1.
40n^{2}+10n\left(-\frac{4}{5}\right)+8n+2\left(-\frac{4}{5}\right)
Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 10n+2 ki ia tau o 4n-\frac{4}{5}.
40n^{2}+\frac{10\left(-4\right)}{5}n+8n+2\left(-\frac{4}{5}\right)
Tuhia te 10\left(-\frac{4}{5}\right) hei hautanga kotahi.
40n^{2}+\frac{-40}{5}n+8n+2\left(-\frac{4}{5}\right)
Whakareatia te 10 ki te -4, ka -40.
40n^{2}-8n+8n+2\left(-\frac{4}{5}\right)
Whakawehea te -40 ki te 5, kia riro ko -8.
40n^{2}+2\left(-\frac{4}{5}\right)
Pahekotia te -8n me 8n, ka 0.
40n^{2}+\frac{2\left(-4\right)}{5}
Tuhia te 2\left(-\frac{4}{5}\right) hei hautanga kotahi.
40n^{2}+\frac{-8}{5}
Whakareatia te 2 ki te -4, ka -8.
40n^{2}-\frac{8}{5}
Ka taea te hautanga \frac{-8}{5} te tuhi anō ko -\frac{8}{5} mā te tango i te tohu tōraro.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
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Whakaurunga
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Ngā Tepe
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