Whakaoti i te (5n-4/5)(5n-1/5)

$$( 5 n - \frac { 4 } { 5 } ) ( 5 n - \frac { 1 } { 5 } )$$

Aromātai

$$25n^{2}-5n+\frac{4}{25}$$

Ngā Upane Otinga

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 5n-\frac{4}{5} ki ia tau o 5n-\frac{1}{5}.

$$25n^{2}+5n\left(-\frac{1}{5}\right)-\frac{4}{5}\times 5n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Me whakakore te 5 me te 5.

$$25n^{2}-n-\frac{4}{5}\times 5n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Me whakakore te 5 me te 5.

$$25n^{2}-n-4n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Pahekotia te -n me -4n, ka -5n.

$$25n^{2}-5n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Me whakarea te -\frac{4}{5} ki te -\frac{1}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$25n^{2}-5n+\frac{-4\left(-1\right)}{5\times 5}$$

Mahia ngā whakarea i roto i te hautanga \frac{-4\left(-1\right)}{5\times 5}.

$$25n^{2}-5n+\frac{4}{25}$$

Whakaroha

$$25n^{2}-5n+\frac{4}{25}$$

Ngā Upane Otinga

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o 5n-\frac{4}{5} ki ia tau o 5n-\frac{1}{5}.

$$25n^{2}+5n\left(-\frac{1}{5}\right)-\frac{4}{5}\times 5n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Me whakakore te 5 me te 5.

$$25n^{2}-n-\frac{4}{5}\times 5n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Me whakakore te 5 me te 5.

$$25n^{2}-n-4n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Pahekotia te -n me -4n, ka -5n.

$$25n^{2}-5n-\frac{4}{5}\left(-\frac{1}{5}\right)$$

Me whakarea te -\frac{4}{5} ki te -\frac{1}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$25n^{2}-5n+\frac{-4\left(-1\right)}{5\times 5}$$

Mahia ngā whakarea i roto i te hautanga \frac{-4\left(-1\right)}{5\times 5}.

$$25n^{2}-5n+\frac{4}{25}$$