Whakaoti i te (a+1)(a-1)(a+3)(a-3)

$$( a + 1 ) ( a - 1 ) ( a + 3 ) ( a - 3 )$$

Aromātai

$$a^{4}-10a^{2}+9$$

Ngā Upane Otinga

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o a+1 ki ia tau o a-1.

$$\left(a^{2}-a+a-1\right)\left(a+3\right)\left(a-3\right)$$

Pahekotia te -a me a, ka 0.

$$\left(a^{2}-1\right)\left(a+3\right)\left(a-3\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o a^{2}-1 ki ia tau o a+3.

$$\left(a^{3}+3a^{2}-a-3\right)\left(a-3\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o a^{3}+3a^{2}-a-3 ki ia tau o a-3.

$$a^{4}-3a^{3}+3a^{3}-9a^{2}-a^{2}+3a-3a+9$$

Pahekotia te -3a^{3} me 3a^{3}, ka 0.

$$a^{4}-9a^{2}-a^{2}+3a-3a+9$$

Pahekotia te -9a^{2} me -a^{2}, ka -10a^{2}.

$$a^{4}-10a^{2}+3a-3a+9$$

Pahekotia te 3a me -3a, ka 0.

$$a^{4}-10a^{2}+9$$

Whakaroha

$$a^{4}-10a^{2}+9$$

Ngā Upane Otinga

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o a+1 ki ia tau o a-1.

$$\left(a^{2}-a+a-1\right)\left(a+3\right)\left(a-3\right)$$

Pahekotia te -a me a, ka 0.

$$\left(a^{2}-1\right)\left(a+3\right)\left(a-3\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o a^{2}-1 ki ia tau o a+3.

$$\left(a^{3}+3a^{2}-a-3\right)\left(a-3\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o a^{3}+3a^{2}-a-3 ki ia tau o a-3.

$$a^{4}-3a^{3}+3a^{3}-9a^{2}-a^{2}+3a-3a+9$$

Pahekotia te -3a^{3} me 3a^{3}, ka 0.

$$a^{4}-9a^{2}-a^{2}+3a-3a+9$$

Pahekotia te -9a^{2} me -a^{2}, ka -10a^{2}.

$$a^{4}-10a^{2}+3a-3a+9$$

Pahekotia te 3a me -3a, ka 0.

$$a^{4}-10a^{2}+9$$